2 Kings 16:7
So Ahaz sent messengers to Tiglathpileser king of Assyria, saying, I am thy servant and thy son: come up, and save me out of the hand of the king of Syria, and out of the hand of the king of Israel, which rise up against me.
So Ahaz sent messengers to Tiglathpileser king of Assyria,.... Of whom see 2 Kings 15:29
saying, I am thy servant, and thy son; signifying, that he would be his vassal, and become tributary to him, and serve him as a servant to his master, or a son his father, on condition he would come to his assistance, and so he became his servant; hence his son Hezekiah is said to rebel against the king of Assyria, 2 Kings 18:1
come up and save me out of the hand of the king of Syria, and out of the hand of the king off Israel, which rise up against me; which assistance he had no reason to call in, since the Lord had promised him deliverance from both those kings, and gave him a sign of it, Isaiah 7:4.