What does Isaiah 7:4 mean?
Isaiah has received instruction from the Lord to find King Ahaz at a crucial moment in Judah's history (Isaiah 7:3). The armies of allied Syria and Israel have come to attack Judah. They have already destroyed tens of thousands of Ahaz's people (2 Chronicles 28). These two nations are now making their way toward Jerusalem to put the city under siege (Isaiah 7:1). Ahaz and his citizens are terrified.God tells the king of Judah, essentially, to "calm down." The Lord describes these two kings as "smoldering stumps of firebrands." In other words, they are like a stick that has been pulled from a campfire, but will soon go out. They are a threat that will not last.
It's true that both kings are fiercely angry. The Lord names these two kings. Rezin is the king of Syria and Pekah the son of Remaliah is the king of the northern ten tribes of Israel. Despite their anger, both will soon be gone from power. The Lord does not want Ahaz to respond to their coming attack with fear or foolishness. It won't be long before they are not a problem.