2 Samuel 9:2-3

And there was of the house of Saul a servant whose name was Ziba, and they called him unto David; and the king said unto him, Art thou Ziba? And he said, Thy servant is he. And the king said, Is there not yet any of the house of Saul, that I may show the kindness of God unto him? And Ziba said unto the king, Jonathan hath yet a son, who is lame of his feet.