Genesis 17:12

17:12 Throughout your generations every male among you who is eight days old must be circumcised, whether born in your house or bought with money from any foreigner who is not one of your descendants.

Genesis 19:31

19:31 Later the older daughter said to the younger, “Our father is old, and there is no man anywhere nearby to have sexual relations with us, according to the way of all the world.

Genesis 21:7

21:7 She went on to say, “Who would have said to Abraham that Sarah would nurse children? Yet I have given birth to a son for him in his old age!”

Genesis 27:1

Jacob Cheats Esau out of the Blessing

27:1 When Isaac was old and his eyes were so weak that he was almost blind, he called his older son Esau and said to him, “My son!” “Here I am!” Esau replied.

Genesis 41:46

41:46 Now Joseph was 30 years old when he began serving Pharaoh king of Egypt. Joseph was commissioned by Pharaoh and was in charge of all the land of Egypt.