16 At that time king Ahaz sent to the king of Assyria to help him.
2 Chronicles 28:16 Cross References - LITV
2 Kings 16:5-7
5 Then Rezin the king of Syria and Pekah the son of Remaliah the king of Israel came up to Jerusalem to war. And they besieged Ahaz, but they were not able to fight.
6 At that time Rezin the king of Syria brought Elath back to Syria, and threw the Jews out of Elath; and the Syrians came to Elath and lived there to this day.
7 And Ahaz sent messengers to Tiglath-pileser the king of Assyria, saying, I am your servant and your 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, who have risen up against me.
Isaiah 7:1-9
1 And it happened in the days of Ahaz: the son of Jotham, the son of Uzziah, king of Judah, Rezin the king of Syria, and Pekah the son of Remaliah, king of Israel, went up to Jerusalem to war against it, but were not able to do battle against it.
2 And the house of David was told, saying, Syria is allied with Ephraim, and his heart and the heart of his people shook, as the trees of the forest shake from the wind.
3 And Jehovah said to Isaiah, Go out to meet Ahaz, you and your son Shearjashub, at the end of the conduit of the upper pool, to the highway of the Fuller's Field.
4 And say to him, Be on guard and be calm. Do not fear nor be timid of heart because of the two tails of these smoking firebrands, because of the fierce anger of Rezin and Syria, and of the son of Remaliah.
5 Because Syria, Ephraim, and the son of Remaliah have plotted evil against you, saying,
6 Let us go up against Judah and make her to dread, and break her for ourselves, and set a king in her midst, the son of Tabeal.
7 So says the Lord Jehovah, It shall not rise, nor shall it happen.
8 For the head of Syria is Damascus, and the head of Damascus is Rezin; and within sixty five years Ephraim shall be broken from being a people.
9 And the head of Ephraim is Samaria, and the head of Samaria is Remaliah's son. If you will not believe, surely you will not be established.
Isaiah 7:17
17 Jehovah shall bring the king of Assyria on you, and on your people, and on your father's house, days which have not come since the days Ephraim turned aside from Judah.