Genesis 21:1-7 - The Birth Of Isaac

¹ The LORD visited Sarah as he had said, and the LORD did to Sarah as he had spoken. ² Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him. ³ Abraham called his son who was born to him, whom Sarah bore to him, Isaac. ⁴ Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him. ⁵ Abraham was one hundred years old when his son, Isaac, was born to him.

⁶ Sarah said, "God has made me laugh. Everyone who hears will laugh with me." ⁷ She said, "Who would have said to Abraham, that Sarah would nurse children? For I have borne him a son in his old age."