1 Kings 11:20-21

20Then the sister of Tahpenes bore him Genubath his son, whom Tahpenes weaned in Pharaoh’s house. And Genubath was in Pharaoh’s household among the sons of Pharaoh.

21So when Hadad heard in Egypt that David rested with his fathers, and that Joab the commander of the army was dead, Hadad said to Pharaoh, “Let me depart, that I may go to my own country.”