Genesis 21:1–2 | Isaac's Birth: God Fulfills His Promise to Abraham & Sarah

The Christian Life Podcast · Aug 21, 2026 · 2m

And the LORD visited Sarah as He said, and the LORD did for Sarah as He spoke. And she conceived, and Sarah bore to Abraham a son for his old age for the appointed time which God had spoken with him (Genesis 21:1–2).

Abraham was one hundred years old when the LORD fulfilled His promise to give Sarah a child (Genesis 21:5). He named his son Isaac, referencing his earlier laughter upon hearing that he would have an heir through Sarah (Genesis 17:17). In accordance with his faith, Abraham circumcised Isaac on the eighth day (Genesis 21:4; cf. Genesis 17:10).

Sarah was ninety years old when the…