Jamieson, Fausset and Brown on 2 Kings 17:7

7. For so it was, that the children of Israel had sinned--There is here given a very full and impressive vindication of the divine procedure in punishing His highly privileged, but rebellious and apostate, people. No wonder that amid so gross a perversion of the worship of the true God, and the national propensity to do reverence to idols, the divine patience was exhausted; and that the God whom they had forsaken permitted them to go into captivity, that they might learn the difference between His service and that of their despotic conquerors.