In the days of Ahaz the son of Jotham, son of Uzziah, king of Judah, Rezin the king of Syria and Pekah the son of Remaliah the king of Israel came up to Jerusalem to wage war against it, but they could not conquer it. When the house of David was told, "Syria is in league with Ephraim," his heart and the heart of his people shook as the trees of the forest shake before the wind.
And the LORD said to Isaiah, "Go forth to meet Ahaz, you and Shearjashub your son, at the end of the conduit of the upper pool on the highway to the Fuller's Field, and say to him, 'Take heed, be quiet, do not fear, and do not let your heart be faint because of these two smoldering stumps of firebrands, at the fierce anger of Rezin and Syria and the son of Remaliah. Because Syria, with Ephraim and the son of Remaliah, has devised evil against you, saying, "Let us go up against Judah and terrify it, and let us conquer it for ourselves, and set up the son of Tabeel as king in the midst of it," thus says the Lord GOD: It shall not stand, and it shall not come to pass. For the head of Syria is Damascus, and the head of Damascus is Rezin. (Within sixty-five years Ephraim will be broken to pieces so that it will no longer be a people.) And the head of Ephraim is Samaria, and the head of Samaria is the son of Remaliah. If you will not believe, surely you shall not be established.'"
Again the LORD spoke to Ahaz, "Ask a sign of the LORD your God; let it be deep as Sheol or high as heaven." But Ahaz said, "I will not ask, and I will not put the LORD to the test." And he said, "Hear then, O house of David! Is it too little for you to weary men, that you weary my God also? Therefore the Lord himself will give you a sign. Behold, a young woman shall conceive and bear a son, and shall call his name Immanuel.