Isaiah 7:2

The house of David; Ahaz, and his royal relations and courtiers. He calls them the house of David, to intimate that the following comfortable message was sent to Ahaz, not for his own sake, but only for the sake of his worthy progenitor, David, to whom God had promised an everlasting kingdom. Ephraim; the kingdom of the ten tribes, commonly called Ephraim, as Isaiah 28:1 Hosea 12:1, because that was far the most numerous and potent of all of them. Was moved with excessive fear, arising partly from the conscience of their own guilt, whereby they had put themselves out of God's protection; and partly from the consideration of the great strength and power of his enemies, who having prevailed against him severally, 2 Chronicles 28:5,8, and having now united their threes, he, having no faith in God, nor confidence to desire or expect his help, concluded his case desperate and deplorable.