II. Ahaz rudely refuses this gracious offer, and (which is not mannerly towards any superior) kicks at the courtesy, and puts a slight upon it (v. 12): I will not ask. The true reason why he would not ask for a sign was because, having a dependence upon the Assyrians, their forces, and their gods, for help, he would not thus far be beholden to the God of Israel, or lay himself under obligations to him. He would not ask a sign for the confirming of his faith because he resolved to persist in his unbelief, and would indulge his doubts and distrusts; yet he pretends a pious reason: I will not tempt the Lord; as if it would be a tempting of God to do that which God himself invited and directed him to do. Note, A secret disaffection to God is often disguised with the specious colours of respect to him; and those who are resolved that they will not trust God yet pretend that they will not tempt him.