Gn 21:1-8

Birth of Isaac.^* 1The LORD took note of Sarah as he had said he would; the LORD did for her as he had promised.^a 2Sarah became pregnant and bore Abraham a son in his old age, at the set time that God had stated.^b 3Abraham gave the name Isaac to this son of his whom Sarah bore him.^c 4When his son Isaac was eight days old, Abraham circumcised him, as God had commanded.^d 5Abraham was a hundred years old when his son Isaac was born to him. 6Sarah then said, “God has given me cause to laugh,^* and all who hear of it will laugh with me.^e 7Who would ever have told Abraham,” she added, “that Sarah would nurse children! Yet I have borne him a son in his old age.” 8The child grew and was weaned, and Abraham held a great banquet on the day of the child’s weaning.