2 Kings 18:4

4. He removed the high places and brake the images, c.—The methods adopted by this good king for extirpating idolatry, and accomplishing a thorough reformation in religion, are fully detailed (2 Chronicles 20:3 2 Chronicles 31:19). But they are indicated very briefly, and in a sort of passing allusion.

brake in pieces the brazen serpent—The preservation of this remarkable relic of antiquity (Numbers 21:5-10) might, like the pot of manna and Aaron's rod, have remained an interesting and instructive monument of the divine goodness and mercy to the Israelites in the wilderness: and it must have required the exercise of no small courage and resolution to destroy it. But in the progress of degeneracy it had become an object of idolatrous worship and as the interests of true religion rendered its demolition necessary, Hezekiah, by taking this bold step, consulted both the glory of God and the good of his country.

unto those days the children of Israel did burn incense to it—It is not to be supposed that this superstitious reverence had been paid to it ever since the time of Moses, for such idolatry would not have been tolerated either by David or by Solomon in the early part of his reign, by Asa or Jehoshaphat had they been aware of such a folly. But the probability is, that the introduction of this superstition does not date earlier than the time when the family of Ahab, by their alliance with the throne of Judah, exercised a pernicious influence in paving the way for all kinds of idolatry. It is possible, however, as some think, that its origin may have arisen out of a misapprehension of Moses' language (Numbers 21:8). Serpent-worship, how revolting soever it may appear, was an extensively diffused form of idolatry; and it would obtain an easier reception in Israel because many of the neighboring nations, such as the Egyptians and Phoelignicians, adored idol gods in the form of serpents as the emblems of health and immortality.