Latest / Reformed Thinking / Nothing Too Wonderful for the LORD: Promise, Unbelief, and Divine Faithfulness (Genesis 18:9–15)
Transcript
- 0:00Welcome to Reformed Thinking. This is where we take a close
- 0:03look at Scripture, theology, and church history, and we try to
- 0:06connect it all back to a solid biblical framework.
- 0:10Today we're doing a deep dive into a really short but
- 0:13incredibly dense passage. Genesis 18 verses 9 through 15.
- 0:18This is a story that puts us right at a collision point.
- 0:21It's where a clear, time stamped promise from God just slams into
- 0:25the wall of human impossibility. I mean, you have Abraham and
- 0:28Sarah. They're old.
- 0:29They're well past the age of having children, and they get
- 0:32this startling promise that, well, they just can't bring
- 0:34themselves to believe. Our mission today is to unpack
- 0:37this little narrative, not just as, you know, a historical
- 0:40event, but as a defining moment for theology.
- 0:43It really sets the stage for a core idea about God's character
- 0:47that anchors everything that comes after.
- 0:49We're really looking for the answer to the Lord's big
- 0:51question in this text. And that question really is the
- 0:53hinge of the whole story, isn't it?
- 0:54Is because up until that point, the whole conversation,
- 0:57certainly in Sarah's mind, is all about what humans can and
- 1:00can't do. It's about biology.
- 1:03But this passage forces you, the reader, to shift the entire
- 1:07framework. We have to move from thinking
- 1:09about human capacity to thinking about the character of God, His
- 1:13sovereignty, his knowledge, his creative ability.
- 1:17For anyone who looks at Scripture through reformed lens,
- 1:19this story is just central. It shows why Isaac's birth has
- 1:23to be seen as sheer grace. The text is almost surgically
- 1:28precise. It's written to cut away any
- 1:30chance for human beings to take credit or to come up with some
- 1:33natural explanation for what happens.
- 1:34So you see this dynamic play out right there at the tent.
- 1:37Human inability. That's the law.
- 1:38It meets God's sovereign favor. That's the gospel.
- 1:41The covenant moves forward only because the one making the
- 1:43promises reliable, not because the people receiving it are
- 1:46capable. OK, so let's get into the
- 1:48details of that scene. It starts with this, well,
- 1:52almost jarring change of pace in verse 9.
- 1:55For the first part of the chapter, we've seen Abraham's
- 1:58incredible hospitality. He's running around, he's
- 2:00bowing, he's serving these three visitors.
- 2:02It's a very domestic, ordinary meal.
- 2:04It is. And then all of a sudden, the
- 2:07tone completely changes, the meal is interrupted, and it gets
- 2:10right down to covenant business with this very pointed question,
- 2:14Where is Sarah, your wife? It's narrative whiplash, really.
- 2:17One minute Abraham's playing the host and the next the visitors
- 2:22who we know are the Lord and two angels.
- 2:24They just cut right through all the small talk.
- 2:27And like you said, it's not a real question in the sense that
- 2:30he needs information. He knows where she is.
- 2:32Of course, it's a summons. It's a way of pulling Sarah, the
- 2:35one who has to be the mother, out of the background and
- 2:37putting her right in the middle of the plan.
- 2:40Abraham has heard the word before, but now the spotlight
- 2:43turns directly onto her. And that specific wording,
- 2:46Sarah, your wife, that seems to carry a lot of extra weight.
- 2:50It's not just where is Sarah. It does.
- 2:52It defines the path of the covenant with such precision.
- 2:55By saying Sarah, your wife, God is confirming that the promised
- 2:59child will come through their specific, legitimate marriage.
- 3:03It's a quiet but very firm correction of what they tried to
- 3:07do before. Yes, the Hagar situation.
- 3:10Let's touch on that, because you can't really get the force of
- 3:12this without remembering Genesis 16.
- 3:15You really can't. Sarah acting out of what
- 3:17probably felt like common sense at the time, you know, feeling
- 3:20like God needed a bit of help, she gives her servant Hagar to
- 3:24Abraham. And that gives them Ishmael, the
- 3:26son of human planning. Exactly.
- 3:28Human ingenuity, trying to solve a divine problem with, well,
- 3:31human logic. When the promise seemed like it
- 3:33was failing, they improvised. And so the Lord comes back here
- 3:38in chapter 18 and essentially says that plan is off the table.
- 3:41The promise runs through Sarah, your wife.
- 3:44He's making it clear that he defines the means, not just the
- 3:47end. And the means have to bring
- 3:49glory to His faithfulness, not their strategy.
- 3:52So then Abraham gives us a very simple answer that puts us in
- 3:55what you called the loaded location.
- 3:56He just says in the tent. Right.
- 3:58And the tent is such a key part of the story set up.
- 4:02Sarah is close enough to hear what's being said to Abraham,
- 4:05but she's also hidden. She's behind the tent flap.
- 4:08The analysis we have describes it as a kind of veil.
- 4:10A veil that hides her from view, but as she's about to find out,
- 4:13it doesn't hide anything else. Not at all.
- 4:16Her being physically hidden just sets up the irony of what's
- 4:19about to happen. Her secret reaction, her private
- 4:22doubt is about to be completely exposed by the very person
- 4:25speaking outside. So the narrative uses this
- 4:27private space to build the drama and get the reader ready for
- 4:30this big idea. Sarah might be hidden from the
- 4:33men she's serving, but absolutely nothing is hidden
- 4:36from the Lord. OK, now we get to the core of
- 4:39the statement in verse 10 and the narrator is very clear.
- 4:42The one speaking is Yahweh, the covenant making God.
- 4:45And his identity is what makes the promise solid.
- 4:47The declaration itself is made with total certainty in a very
- 4:50firm timeline, he says. I will surely return.
- 4:54That phrase I will surely return.
- 4:56You mentioned the Hebrew grammar here is emphatic.
- 4:58Can you unpack that a little for us?
- 5:00What does that grammatical structure actually do to the
- 5:03meaning? That's a great question.
- 5:05It's what turns this from just a prediction into an unbreakable
- 5:08decree. In Hebrew, when you put a
- 5:12certain form of the verb, the infinitive absolute, before the
- 5:15main verb, it's like adding a huge exclamation point.
- 5:19So it's not just I will return. It's more like returning.
- 5:23I will return. It's an intensification.
- 5:25It signals that this is an unchangeable, definite plan.
- 5:28It's not a maybe. It's a guaranteed pledged visit.
- 5:32God is tying the certainty of the outcome to the certainty of
- 5:35His own presence. So the fulfillment isn't some
- 5:37far off thing that might happen. It's the direct result of God's
- 5:41own faithfulness acting in real time.
- 5:43It's locked in. Locked in and the timeline does
- 5:46the same thing, he says about this time next year.
- 5:48This removes all the vagueness. Right, which has two things.
- 5:52It puts the promise on a real calendar so it can be tested,
- 5:54but it also means the birth can't just be brushed off as a
- 5:57coincidence later. It's a theological safeguard.
- 5:59It protects the meaning of the miracle.
- 6:01If Isaac had been born, say, five years later, you could
- 6:04argue it was just a strange late in life fluke.
- 6:07But the one year timeline takes that option away.
- 6:11God is making it impossible for Isaac's birth to be explained
- 6:14away. If the child shows up on
- 6:16schedule, it is undeniable proof of God's faithfulness.
- 6:19Nature can't take the credit. Which brings it all back to
- 6:21grace. The promise is simple.
- 6:23Sarah, your wife shall have a son.
- 6:25It just keeps hammering home that God has chosen the very
- 6:28path that seems humanly impossible.
- 6:30And that's the divine design. By naming Sarah, whose bodies
- 6:34we're about to hear was done with childbearing, the Lord ties
- 6:37the promise to the very place where human strength had already
- 6:40failed. The whole situation is set up to
- 6:42show that keeping His word is His work alone.
- 6:46The long wait wasn't God forgetting, it was God arranging
- 6:49the circumstances so that the only possible explanation would
- 6:51be His undeserved favor. OK, so this is where the tension
- 6:55really ratchets up. Right after that powerful,
- 6:57definite promise, the narrator just hits the brakes.
- 6:59Verse 11 slows everything down and the narrator's voice steps
- 7:03in to make the biological reality crystal clear for the
- 7:06reader. We get this double statement.
- 7:09They were old, advanced in years, and then The Way of Women
- 7:13had ceased to be with Sarah. It's so explicit.
- 7:17The writer isn't just saying she was getting older, he's saying
- 7:19physiologically it was over, the door was closed and locked, and
- 7:23the reason for slowing the story down here is so critical.
- 7:26First, it gets rid of any plausible natural explanation
- 7:28before the baby arrives. But second, from a theological
- 7:32standpoint, it's there to silence human boasting forever.
- 7:35If there was even a tiny bit of natural possibility left, the
- 7:38miracle wouldn't have the same weight.
- 7:40It wouldn't. The narrator is basically
- 7:42teaching us how to interpret what's coming.
- 7:44Isaac is not going to be proof of Abraham's vitality.
- 7:47He's going to be a walking, breathing monument to divine
- 7:49faithfulness. The text makes us feel the
- 7:52weight of that impossibility, so that when faith comes, it's
- 7:55faith in God, not in some vague hope that we can just rally and
- 7:59make things happen. Which sets the stage perfectly
- 8:01for Sarah's reaction in verse 12.
- 8:04The camera shifts and we go inside, her head behind that
- 8:08tent flap, and it says. Sarah laughed to herself.
- 8:11And specifically within herself for your Krupa.
- 8:15Right. And this isn't happy laughter.
- 8:17This is the laugh of disbelief, isn't it?
- 8:19Oh. Absolutely.
- 8:19The analysis we looked at called this a psychologically honest
- 8:22response, and I think that's right.
- 8:24Unbelief doesn't usually shout from the rooftops, it hides
- 8:27behind what looks like common sense.
- 8:29She's just being realistic. Let's look at her internal
- 8:32argument. After I am worn out and my Lord
- 8:34is old, shall I have pleasure? She's just stacking up the
- 8:37evidence against the promise. She starts with herself, worn
- 8:40out. That's not just physical, it's a
- 8:42sense of being used up, finished.
- 8:44Then she adds Abraham's age. Her logic is based entirely on
- 8:47what you can see she. Looks at her body, she looks at
- 8:50his body and she comes to a conclusion Impossible.
- 8:53Her reason is completely shaped by the evidence of decay.
- 8:57She's interpreting God's word through the limits of nature.
- 9:00It's a classic case of letting the creature's condition dictate
- 9:04the creator's ability. And one of our sources mentioned
- 9:06this idea of her laughter being a counter sermon to God's word,
- 9:11and it connected it to functional atheism.
- 9:13Can we unpack that a bit? We should.
- 9:16Functional atheism is a really helpful idea here.
- 9:19It's what happens when we say we believe in God, but we operate
- 9:22as if he isn't really in charge of the details.
- 9:25We might grant God the spiritual world, you know, Sure, God is
- 9:28good. God is sovereign in some big
- 9:30abstract way, but we deny him the ability to actually step
- 9:34into the concrete physical world and change things.
- 9:37So Sarah is thinking, I believe God is God, but he can't make my
- 9:41old body have a baby. That's it.
- 9:43She's letting her rationalism, her experience of how the world
- 9:45works, have the final say over God's revelation.
- 9:49This is why the tax treats her private doubts so seriously.
- 9:52It's having small thoughts about a great God.
- 9:54But to play devil's advocate for a second, I mean, given
- 9:56everything she'd been through leaving her home, the deception
- 9:59in Egypt, the whole painful Hagar business, wasn't her doubt
- 10:02just a rational response? Wasn't it just common sense?
- 10:04That's a fair question, and the text is honest about that.
- 10:07Biologically, yes, her doubt was completely rational, but that's
- 10:11the whole point of the law gospel dynamic we talked about.
- 10:14Life in the covenant requires a different kind of logic, one
- 10:17that goes beyond human reason. The Lord isn't criticizing her
- 10:22for noticing she's old, He's criticizing her for assuming her
- 10:25age is the most real thing in the room.
- 10:28He's criticizing her premise. Yes, her premise is that
- 10:31creations limits are God's limits, and the covenant life is
- 10:35built on the opposite premise, that the Creator's word sets the
- 10:39limits. And it's that word for laughter,
- 10:41Zahawk, that ends up being the name of the child Isaac.
- 10:44It feels like God is reclaiming that word, taking it from the
- 10:46world of cynical doubt and turning it into a word of joy.
- 10:48That's the whole story arc in a nutshell.
- 10:51God is going to turn this private laughter of disbelief
- 10:54into public laughter of joy, but He can't do that until the
- 10:58disbelief is brought out into the open, confronted and
- 11:01corrected by the truth of who He is.
- 11:03So that confrontation starts immediately in verse 13.
- 11:07We go straight from Sarah's secret thoughts to the Lord's
- 11:10voice, and he quotes her. He quotes what she said inside
- 11:13her own head. Why did Sarah laugh?
- 11:16I mean, just imagine being Abraham and Sarah in that
- 11:19moment. Terrifying.
- 11:20The tent flap is just useless as a shield.
- 11:23This is a moment of massive theological revelation.
- 11:26It proves the deity of the speaker.
- 11:28A minute ago he was just a man eating a meal.
- 11:31Now he knows the thoughts of a woman hidden in a tent.
- 11:33It drives home this idea of living quorum dio before the
- 11:37face of God. There's nowhere to hide, not
- 11:39even a passing thought. So when God asks the question
- 11:42like why did Sarah laugh, he obviously isn't looking for
- 11:45information, so what's the point?
- 11:47Questions from God in the Bible are almost never about gathering
- 11:50data, they're diagnostic tools. He's not saying explain your
- 11:54reasoning to me, he's saying I want you to look at your
- 11:56reasoning. He's forcing her to see the
- 11:58faulty premises controlling her heart, the premise that her age
- 12:02defines reality. And this brings us right to the
- 12:04absolute peak of the passage in verse 14.
- 12:07This is the question the whole story has been building toward.
- 12:09Is anything too wonderful for the Lord?
- 12:11And that single question just distills the entire point.
- 12:16We have to sit with that Hebrew word, Paula.
- 12:19It's translated as wonderful or extraordinary, but it's a word
- 12:23that is almost exclusively used for acts that only God can do.
- 12:27So it's different than just asking if something is too hard
- 12:30or difficult. It is hard suggests a scale of
- 12:33difficulty. Paul is something that's in a
- 12:35different category altogether. It's a marvel.
- 12:38It's something that overrides the natural order.
- 12:41Think of the plagues in Egypt or the parting of the Red Sea.
- 12:44Those weren't just hard, they were wonders.
- 12:47So by using that word, God is saying that Isaac's birth won't
- 12:50just be a biological surprise, it will be a theological
- 12:53statement, a wonder that only he can perform.
- 12:56He's basically interrogating her working theology.
- 12:58The issue isn't her biology, it's her view of God.
- 13:01Exactly. Is her God small?
- 13:03Is he bound by the rules of the world he made?
- 13:06This question asserts God's absolute freedom.
- 13:09When we look at something like the Westminster Confession, it
- 13:11says that God is free to work without, above and against
- 13:15ordinary means. Let's break that down for a
- 13:17minute. What would that look like in
- 13:18this context? OK, so working with ordinary
- 13:21means would be a young healthy couple having a child.
- 13:25Normal biology working against ordinary means is what we have
- 13:29here with Sarah. Her body is described as dead in
- 13:32the New Testament. So this isn't just a miracle
- 13:35without means, it's a miracle that is actively working against
- 13:38all the biological evidence. Sarah's dead womb is the total
- 13:41failure of ordinary means, and the Lord is saying I reserve the
- 13:45right to overrule biology to fulfill my promise.
- 13:49Faith in the God of the Bible has to agree to a God who can do
- 13:51that. And right after he asks that
- 13:53huge theological question, he doesn't just leave it hanging
- 13:56there. He immediately repeats the
- 13:58promise. At the point of time, I will
- 14:00return to you about this time next year, And Sarah shall have
- 14:02a son. It's almost word for word from
- 14:05verse 10. Why is that repetition so
- 14:07critical right then? It's just stunning mercy.
- 14:10It's pure grace. The promise isn't weakened or
- 14:13changed because Sarah doubted. He doesn't renegotiate because
- 14:15of her skepticism. He just says it again with the
- 14:18exact same term. This is such a ground for our
- 14:21faith. God's ability is the guarantee
- 14:23that His Word will happen, no matter how shaky Sarah's faith
- 14:26is in that moment. The covenant stands on God's
- 14:29solid speech, not our unstable emotions.
- 14:32It's like he's driving a stake deeper into the ground.
- 14:34He is, and that phrase appointed time, is the final piece.
- 14:38God controls not just what will happen, but when, and that
- 14:41forces them to live in that difficult in between space.
- 14:44The waiting. Period, right?
- 14:45And waiting in faith is where God's faithfulness is displayed.
- 14:48That appointed time guards against two big mistakes,
- 14:52impatience, which leads to shortcuts like Hagar, and
- 14:55cynical despair, which leads to Sarah's bitter laugh.
- 14:58It teaches us to rest in the fact that God's schedule is
- 15:00perfect. So the scene wraps up with this
- 15:02very human, very raw exchange in verse 15.
- 15:06The Lord has just exposed Sarah's heart, stated His
- 15:09omnipotence, and repeated the promise.
- 15:12And Sarah's response is just denial.
- 15:14I did not lash, she says. For she was afraid.
- 15:16That fear, yeah, it's the gut reaction of a person who's been
- 15:20exposed, and it leads straight to a lie.
- 15:23She's trying to save face, to protect that last little bit of
- 15:27her in her life. It has echoes of Adam and Eve in
- 15:29the garden, doesn't it? A direct echo.
- 15:32When God's question exposed them, they hid and they blamed.
- 15:36Sarah is trying to manage the situation instead of just
- 15:38surrendering to the truth. Fear corrupts speech.
- 15:42And the Lord's response is so short and so final.
- 15:45No, but you did laugh. It's a kindness, isn't it?
- 15:48It sounds harsh, but it's a great mercy.
- 15:51If God had let her get away with that denial, He would have let
- 15:54her stay in herself. Deception.
- 15:56So the correction isn't meant to shame her, it's meant to heal
- 15:58her. It has to be.
- 16:00God's Word doesn't bend to fit our feelings or our fears.
- 16:03It just states what is real. He confronts her because he's
- 16:06preparing her for the real joy that's coming.
- 16:09He's getting her ready for Genesis 21 when Isaac is born.
- 16:12And she can say God has made laughter for me.
- 16:15OK, let's zoom out a little. When we look at this whole
- 16:17structure, the promise, the impossibility, the question, the
- 16:19correction, how does this set a pattern for the rest of the
- 16:22Bible? Well, it establishes what you
- 16:24could call the proto miracle of the covenant.
- 16:27Isaac's birth sets this pattern that we see over and over again
- 16:31in redemptive history. God brings life from closed
- 16:35wombs. Rebecca, Rachel Hannah.
- 16:38Elizabeth, the mother of Samson. It happens again and again.
- 16:41It's a consistent pattern that trains the reader to see that
- 16:44the covenant Lord brings life out of death so that human
- 16:47beings can't boast. The line of salvation is visibly
- 16:50God made, not man made. And the same logic from Genesis
- 16:5418 gets picked up in the New Testament to explain
- 16:57justification itself. It does.
- 17:00When Paul in Romans 4 wants to describe Abraham's faith, what
- 17:03does he say? He says Abraham believed God who
- 17:05gives life to the dead and calls into existence the things that
- 17:08do not exist. That's pure Genesis 18.
- 17:11It's the exact same logic our spiritual life comes from the
- 17:13same God who can make a dead womb produce life.
- 17:16The promise is so certain that it creates the very reality it
- 17:19announces. And of course, the connection to
- 17:21the birth of Jesus is unavoidable.
- 17:22I mean, the language is almost a direct quote when the Angel
- 17:25tells Mary about the virgin birth.
- 17:27Another biological impossibility, he says.
- 17:29Nothing will be impossible with God.
- 17:32It's the same theological ground.
- 17:34So the story of the Bible moves from the wonder of life from a
- 17:38dead womb, Sarah, to the even greater wonder of life from a
- 17:41virgin womb, Mary. And the ultimate answer to the
- 17:44Lord's question is anything too wonderful for the Lord?
- 17:47Well, that answer is the resurrection of Jesus Christ.
- 17:49That's where death itself is overturned.
- 17:51OK, that brings this whole thing right into our laps today.
- 17:54How does this passage speak to us right now?
- 17:56What's the application here? I think it directly confronts
- 17:59what one source called respectable unbelief.
- 18:02That's the quiet, cynical part of us that judges God's promises
- 18:06based on our circumstances. And we look at a situation and
- 18:09we conclude my marriage is too damaged for that promise to be
- 18:12true, or my child is too far gone.
- 18:15We do the same math Sarah did. We interpret the promise through
- 18:18our limitations. We do, and the text tells us to
- 18:21flip that. Interpret your limitations
- 18:24through the promise. Stop letting your circumstances
- 18:26have the final word. And what about that idea of tent
- 18:29door spirituality? That's such a vivid picture.
- 18:31It is, isn't it? We can have all the outward
- 18:33habits. We can be near the Word, go to
- 18:35church, say our prayers, but behind a spiritual tent flap
- 18:38we're hiding our real cynical thoughts.
- 18:40God's exposure of Sarah is a mercy.
- 18:42He's not fooled by the performance.
- 18:44The application for us is that confession.
- 18:47Not hiding is the way to get grace.
- 18:50We have to stop denying what God already knows is in our hearts.
- 18:53And finally, that appointed time.
- 18:56The Lord says it twice. That speaks to how hard it is
- 18:59for us to wait. And waiting is an act of faith.
- 19:01That appointed time teaches us to avoid two big errors.
- 19:05The first is impatience, which leads us to try and force things
- 19:07our own way, like with Hagar, And the second is cynical
- 19:10despair, which is Sarah's laughter.
- 19:12The right path is obedient hope. You keep praying, you keep
- 19:15living with integrity, and you rest knowing God's schedule is
- 19:18perfect. He isn't late.
- 19:20His promises can't be overturned by our weakness.
- 19:22It's really an incredible story, the whole logic of omnipotence,
- 19:26the scale of God's plan, all happening in this tiny dusty
- 19:29tent. I think the main take away for
- 19:31me is that God's promise stays solid even when our hearts are
- 19:34all over the place. God isn't content to let us have
- 19:37small thoughts about Him. He'll confront our hidden
- 19:39hearts, not to crush us, but to get us ready for real joy.
- 19:42And that invites you, the listener, to stop the self
- 19:46deception, to stop saying I did not laugh.
- 19:49For a believer, God's correction is a grace.
- 19:52It's meant to move our laughter from that of a cynic to that of
- 19:56someone who is just astonished at what God has done.
- 19:58So maybe the question to leave you with is this where in your
- 20:02life today are you practicing that respectable unbelief?
- 20:06Where are you looking at a promise from God and concluding
- 20:08based on your circumstances that it's just too wonderful to be
- 20:11true? What promise do you need to stop
- 20:13filtering through your limits and start seeing through the
- 20:16eyes of the Lord? Who does What is pal Allah?
- 20:18What is too wonderful for us? Thank you for joining us for
- 20:21this deep dive.