“So Ahaz sent messengers to Tiglath-pileser king of Assyria, saying … Come up and rescue me …” (v7). King Ahaz of Judah didn’t believe God could defend Judah. He looked everywhere else for help and power; he relied on Assyria for military help, and he was so impressed by an idolatrous altar he saw in Damascus that he copied it and replaced God’s altar (v10). Worst of all, he copied the “despicable practices” of Israel’s kings and burned his son as a pagan offering (v3).
“He did not do what was right in the eyes of the Lord …” (v2). Lack of trust in God leads to sin, as we look elsewhere for help. He wants to supply our needs.