Genesis 17:17

17:17 Then Abraham bowed down with his face to the ground and laughed as he said to himself, “Can a son be born to a man who is a hundred years old? Can Sarah bear a child at the age of ninety?”

Genesis 17:1

The Sign of the Covenant

17:1 When Abram was 99 years old, the Lord appeared to him and said, “I am the sovereign God. Walk before me and be blameless.

Genesis 5:9

5:9 When Enosh had lived 90 years, he became the father of Kenan.