Isaiah 7:2

And it was told the house of David, the reigning monarch of that line, in this case Ahaz, saying, Syria is confederate with Ephraim, depending upon the northern kingdom as a faithful ally, its armies having joined Israel's forces to strengthen them, or being supported by them. And his heart was moved and the heart of his people, both King Ahaz and all the people of Judah being frightened by the invasion, as the trees of the wood are moved with the wind, their terror being intensified by their feeling of guilt.