Commentary on the Bible, by Adam Clarke, [1831], at sacred-texts.com
The people destroy all traces of idolatry throughout Judah, Benjamin, Ephraim, and Manasseh, Ch2 31:1. Hezekiah reforms the state of religion in general; and the tithes are brought in from all quarters, and proper officers set over them, Ch2 31:2-13. They bring to also the freewill-offerings, and regulate the priests and Levites and their families, according to their genealogies, Ch2 31:14-19. Hezekiah does every thing in sincerity and truth, and is prosperous, Ch2 31:20, Ch2 31:21.
Brake the images in pieces - This species of reformation was not only carried on through Judah, but they carried it into Israel; whether through a transport of religious zeal, or whether with the consent of Hoshea the Israelitish king, we cannot tell.
In the gates of the tents of the Lord - That is, in the temple; for this was the house, tabernacle, tent, and camp, of the Most High.
The king's portion of his substance for the burnt-offerings - It is conjectured that the Jewish kings, at least from the time of David, furnished the morning and evening sacrifice daily at their own expense, and several others also.
Brought - the first-fruits - These were principally for the maintenance of the priests and Levites; they brought tithes of all the produce of the field, whether commanded or not, as we see in the instance of honey, which was not to be offered to the Lord, Lev 2:11, yet it appears it might be offered to the priests as first-fruits, or in the way of tithes.
In the third month - "The month Sivan; the seventh, Tisri." - Targum.
The heaps - The vast collections of grain which they had from the tithes over and above their own consumption; see Ch2 31:10.
To prepare chambers - To make granaries to lay up this superabundance.
Shimei - was the next - He was assistant to Cononiah.
And Miniamin - Instead of מנימן, Miniamin, בנימן, Benjamin, is the reading of three of Kennicott's and De Rossi's MSS.; and this is the reading of the Vulgate, Syriac, Septuagint, and Arabic.
From twenty years old - Moses had ordered that the Levites should not begin their labor till they were thirty years of age; but David changed this order, and obliged them to begin at twenty.
Wrought - good and right and truth - Here is the proper character of a worthy king: he is Good, and he does good; he is Upright, and he acts justly and maintains justice; he is truly Religious, and he lives according to that truth which he receives as a revelation from God.
He did it with all his heart - In every respect he was a thoroughly excellent man, saw his duty to God and to his people, and performed it with becoming zeal and diligence. May God ever send such kings to the nations of the world; and may the people who are blessed with such be duly obedient to them, and thankful to the God who sends them!