1 Kings 11:19-23

And Hadad found great favour in the sight of Pharaoh, so that he gave him to wife the sister of his own wife, the sister of Tahpenes the queen.

And the sister of Tahpenes bare him Genubath his son, whom Tahpenes weaned in Pharaoh’s house: and Genubath was in Pharaoh’s household among the sons of Pharaoh.

And when Hadad heard in Egypt that David slept with his fathers, and that Joab the captain of the host was dead, Hadad said to Pharaoh, Let me depart, that I may go to mine own country.

Then Pharaoh said unto him, But what hast thou lacked with me, that, behold, thou seekest to go to thine own country? And he answered, Nothing: howbeit let me go in any wise.

And God stirred him up another adversary, Rezon the son of Eliadah, which fled from his lord Hadadezer king of Zobah: