15 They gathered their brothers, and sanctified themselves, and went in, according to the commandment of the king by the words of Yahweh, to cleanse the house of Yahweh.
*Minor differences ignored. Grouped by changes, with first version listed as example.
By the words of the Lord - Rather, as suggested in the margin, "According to the commandment of the king in the business (or matters) of the Lord."
And they gathered their brethren, and sanctified themselves,.... As they were bid, see 2-Chronicles 29:5,
and came, according to the commandment of the king, by the word of the Lord, to cleanse the house of the Lord; for this, which the king commanded, was by the Lord, and they came to do this work, in obedience to both.
These fourteen heads of the various families and branches of Levi assembled their brethren (the other Levites who dwelt in Jerusalem); then they all sanctified themselves, and went forward, according to the command of the king, with the work of cleansing the temple. יהוה בּדברי belongs to הם כּמצות, according to the command of the king, which was founded upon the words of Jahve, i.e., upon the commands of Moses' law; cf. 2-Chronicles 30:12.
To cleanse - From the dirt it had contracted, while it was so long shut up; from dust, cobwebs, and the rust of the vessels. Much more from the idols, and idolatrous altars which had been set up therein.
*More commentary available at chapter level.