The whole assembly was worshiping, the singers were singing, and the trumpeters were playing. All this continued until the burnt offering was completed.
The temple being cleansed, we have here an account of the good use that was immediately made of it. A solemn assembly was called to meet the king at the temple, the very next day (Ch2 29:20); and very glad, no doubt, all the good people in Jerusalem were, when it was said, Let us go up to the house of the Lord, Psa 122:1.
Commenting on 2 Chronicles 29:20-36
Moreover Hezekiah the king and the princes commanded the Levites to sing praise unto the Lord, with the words of David, and of Asaph the seer,.... Making use of psalms composed by the one and the other; Jarchi takes it to be the one hundred and fifth psalm, which begins, "O give thanks unto the Lord, call upon his name"; as in Ch1 16:7.
THE HOUSE OF GOD CLEANSED. (2Ch. 29:12-36) Then the Levites arose--Fourteen chiefs undertook the duty of collecting and preparing their brethren for the important work of cleansing the Lord's house. Beginning with the outer courts--that of the priests and that of the people--the cleansing of these occupied eight days, after which they set themselves to purify the interior; but as the Levites were not allowed...
Commenting on 2 Chronicles 29:12-36