1 Kings 11:20-21

20Tahpenes’ sister gave birth to his son, named Genubath. Tahpenes raised him in Pharaoh’s palace; Genubath grew up in Pharaoh’s palace among Pharaoh’s sons.

21While in Egypt Hadad heard that David had passed away and that Joab, the commander of the army, was dead. So Hadad asked Pharaoh, “Give me permission to leave so I can return to my homeland.”