Isaiah’s first assignment was to speak to a king of Judah named Ahaz who did not believe in God. The nation of Judah was about to be invaded by a coalition of armies formed to oust king Ahaz and replace him with a puppet king referred to as “the son of Tabeal” (Isaiah 7:6). When Isaiah meets up with king Ahaz, he was checking his water supply to see if he could survive a long siege. It says of king Ahaz in Isaiah 7:2, “And his heart was moved, and the heart of his people, as the trees of the wood are moved with the wind.”
The Hebrew word translated moved, nûwa‘ (noo´ – ah) means to waver. The king of Judah and his people were shaken up because during king Uzziah’s 52 year reign they had gained strength and were enjoying prosperity similar to the days of David and Solomon. It seemed unlikely they would need to defend themselves, but the threats made against them were real enough that king Ahaz thought it necessary to check his water supply. As Isaiah approached “the conduit of the upper pool in the highway of the fuller’s field” he was instructed to tell king Ahaz to “take heed, and be quiet” (Isaiah 7:3-4).
Essentially, Isaiah was telling king Ahaz to take it easy and pay attention to what he was about to say. Isaiah had a message of comfort and encouragement to share with king Ahaz, but he wasn’t sure how his message would be received. King Ahaz was only 20 years old and likely had little or no military experience. His grandfather king Uzziah had only been dead about five years, and his father Jotham had done little to maintain Judah’s military strength.
After Isaiah told king Ahaz the plan to overthrow him would fail, he said to the king, “If ye will not believe, surely ye shall not be established” (Isaiah 7:9). What Isaiah told king Ahaz was he needed to exercise his faith. More specifically, Ahaz needed to ask God for help and rely on God’s faithfulness, rather than trusting in his army to deliver him. Isaiah told Ahaz, “Ask thee a sign of the LORD thy God; ask either in the depth, or in the height above. But Ahaz said, I will not ask, neither will I tempt the LORD” (Isaiah 7:11-12). Ahaz refused to give the LORD a chance to prove himself and earn Ahaz’s trust.
Following Ahaz’s rejection of God’s invitation to put him to the test, Isaiah delivered his first gospel message. “Therefore the Lord himself shall give you a sign; Behold, a Virgin shall conceive, and bear a son, and shall call his name Immanuel” (Isaiah 7:14). Isaiah went on to say that judgment was ahead and God would use the king of Assyria to devastate his people and ruin their land.
The sign God intended to give his people, a Messiah, indicated he did not want his people to be destroyed, but saved from their sins. In spite of his many attempts to win their favor, the people of Israel and Judah refused to put their faith in the LORD. In a message that was to be sealed up and kept as a testimony against Israel, Isaiah stated:
For the LORD spake thus to me with a strong hand, and instructed me that I should not walk in the way of this people, saying, say ye not, A confederacy, to all them to whom this people shall say, A confederacy; neither fear ye their fear, nor be afraid. Sanctify the LORD of hosts himself: and let him be your dread. And he shall be for a sanctuary; but for a stone of stumbling and for a rock of offence to both the houses of Israel, for a gin and for a snare to the inhabitants of Jerusalem. And many among them shall stumble, and fall, and be broken, and be snared, and be taken.