Genesis 20:17

20:17 Abraham prayed to God, and God healed Abimelech, as well as his wife and female slaves so that they were able to have children.

Genesis 22:2

22:2 God said, “Take your son – your only son, whom you love, Isaac – and go to the land of Moriah! Offer him up there as a burnt offering on one of the mountains which I will indicate to you.”