Butter and honey shall he eat, that he may know to refuse the evil, and choose the good. For before the child shall know to refuse the evil, and choose the good, the land that thou abhorrest shall be forsaken of both her kings. The LORD shall bring upon thee, and upon thy people, and upon thy father’s house, days that have not come, from the day that Ephraim departed from Judah; even the king of Assyria.
These verses may refer to Isaiah’s second son, Mahershalalhashbaz, who will live in poverty until he reaches the age of accountability. But before he reaches that age, the lands of Syria and Israel will be forsaken by their kings and thus the alliance that Judah feared will come to nothing. But God will also punish Judah through the incursions of the king of Assyria.