Isaiah 7:12

“But Ahaz said, I will not ask, &c.] That is, a sign or miracle to be wrought; being unwilling to take the advice to be still and quiet, and make no preparation for war, or seek out for help from the Assyrians, and to rely upon the promise and power of God, and therefore chose not to have it confirmed by a sign; adding as an excuse, neither will I tempt the Lord, by asking a sign; suggesting that this was contrary to the command of God, (<050616>Deuteronomy 6:16) so pretending religion and reverence of God; whereas, to ask a sign of God, when it was offered, could not be reckoned a tempting him; but, on the contrary, to refuse one; when offered, argued great stubbornness and ingratitude, as…”

“neither . . . tempt--hypocritical pretext of keeping the law (Deu 6:16); "tempt," that is, put God to the proof, as in Mat 4:7, by seeking His miraculous interposition without warrant. But here there was the warrant of the prophet of God; to have asked a sign, when thus offered, would not have been a tempting of God. Ahaz' true reason for declining was his resolve not to do God's will, but to negotiate with Assyria, and persevere in his idolatry (Kg2 16:7-8, Kg2 16:3-4, Kg2 16:10). Men often excuse their distrust in God, and trust in their own devices, by professed reverence for God. Ahaz may have fancied that though Jehovah was the God of Judea and could work a sign there, that was no proof…”

“I will not ask - In this case Ahaz assumed the appearance of piety, or respect for the command of God. In Deuteronomy 6:16, it is written, ‘Thou shalt not tempt the Lord thy God;’ and Ahaz perhaps had this command in his eye. It was a professed reverence for God. But the true reason why he did not seek this sign was, that he had already entered into a negotiation with the king of Assyria to come and defend him; and that he was even stripping the temple of God of its silver and gold, to secure this assistance; 2 Kings 16:7-8. When people are depending on their own devices and resources, they are unwilling to seek aid from God; and it is not uncommon if they excuse their want of trust in him…”

“I will not - By asking a sign, as if I questioned the truth of his word: but this was deep hypocrisy. Isaiah 7:13”

“7:12 I will not test the Lord like that: Despite this seemingly pious response (based on Deut 6:16), Ahaz was most likely already in negotiations with the Assyrians and had already decided whom he would trust for rescue in this war.”

“I will not ask: Kg2 16:15; Ch2 28:22 neither: Eze 33:31 tempt: Deu 6:16; Mal 3:15; Act 5:9; Co1 10:9 Isaiah 7:13”