1 Kings 11:18-22

They set out from Midian and came to Paran; and they took men with them from Paran and came to Egypt, to Pharaoh king of Egypt, who gave him a house and assigned him food and gave him land.

Now Hadad found great favor in the sight of Pharaoh, so that he gave him in marriage the sister of his own wife, the sister of Tahpenes the queen.

And the sister of Tahpenes gave birth to his son Genubath, whom Tahpenes weaned in Pharaoh’s house; and Genubath was in Pharaoh’s house among the sons of Pharaoh.

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

However, Pharaoh said to him, “But what have you lacked with me that you are here, requesting to go to your own country?” And he answered, “Nothing; nevertheless you must let me go.”