2 Kings 18:7 - Joseph Benson’s Commentary on the Old and New Testaments

The Lord was with him, and he prospered, &c. He adhered to God and his service, and therefore God was with him; and, having the special presence of God with him, he had wonderful success in all his enterprises, in his wars, his buildings, and especially his reformation; which good work was carried on with less difficulty than he could have expected. Thus we have in him an instructive and encouraging example, teaching us that they who do God's work with an eye to his glory, and with confidence in his strength, may expect to prosper in it: for great is the truth, and will prevail. And he rebelled against the king of Assyria That is, he threw off that yoke of subjection to him to which his father had basely submitted, and re-assumed that full and independent sovereignty which God had settled in the house of David. This, though here called rebelling against him, was really no more than asserting the just rights of his crown. For his case differed much from that of Zedekiah, who is blamed for rebellion against the king of Babylon. Zedekiah had engaged himself by a solemn oath and covenant, which we do not read that Ahaz had done, much less had Hezekiah. Zedekiah had broke the covenant which himself had made; and God had actually given the dominion of the land and people to the king of Babylon, and commanded both Zedekiah and his subjects to submit to him. But God had not given any such dominion to the king of Assyria, nor had he commanded either Hezekiah or his people to be subject to him. And as to the word rebel here used, it means no more than to depart from that subjection which had been performed to another, which sometimes may be justly done, and certainly might in this case. Indeed, that Hezekiah did not sin in revolting from the king of Assyria seems evident, because God owned and assisted him in it, and did not at all reprove him for it in that message which he sent to him by Isaiah, nor afterward, though he did particularly reprove him for his vain-glory and ostentation, 2 Chronicles 32:25-26.