18:1-8 Hezekiah was a true son of David. Some others did that which was right, but not like David. Let us not suppose that when times and men are bad, they must needs grow worse and worse; that does not follow: after many bad kings, God raised one up like David himself. The brazen serpent had been carefully preserved, as a memorial of God's goodness to their fathers in the wilderness; but it was idle and wicked to burn incense to it. All helps to devotion, not warranted by the word of God, interrupt the exercise of faith; they always lead to superstition and other dangerous evils. Human nature perverts every thing of this kind. True faith needs not such aids; the word of God, daily thought upon and prayed over, is all the outward help we need.
5, 6. He trusted in the Lord God of Israel—without invoking the aid or purchasing the succor of foreign auxiliaries like Asa (1Ki 15:18, 19) and Ahaz (2Ki 16:17; Isa 7:1-25).
so that after him was none like him among all the kings of Judah—Of course David and Solomon are excepted, they having had the sovereignty of the whole country. In the petty kingdom of Judah, Josiah alone had a similar testimony borne to him (2Ki 23:25). But even he was surpassed by Hezekiah, who set about a national reformation at the beginning of his reign, which Josiah did not. The pious character and the excellent course of Hezekiah was prompted, among other secondary influences, by a sense of the calamities his father's wicked career had brought on the country, as well as by the counsels of Isaiah.