Matthew Poole and continuators on 2 Chronicles 30:22

22 And Hezekiah spake comfortably unto all the Levites that taught the good knowledge of the LORD : and they did eat throughout the feast seven days, offering peace-offerings, and making confession unto the LORD God of their fathers.

Encouraged them to a chearful and diligent Attendance upon their Holy Ministrations by the Promise of his Favour and utmost Care for them, which he faithfully performed, ch. 31. 4, &c.

Who by their Office were to instruct and build up the People in the Knowledge and Fear of God: which is mentioned as the Cause of his Respect and Kindness to them, which was for their works sake, as it is said, 1 Thes. 5. 13.

Either 1. Confessing their Sins: which Work was to accompany many of their Sacrifices: of which see Levit. 5. 5. & 16. 21. Or rather 2. Confessing Gods Goodness, or praising of God, which oft goes under this Name, as 1 Chron. 16. 8, 24. which also seems to be more proper work for this Season of Joy.

Marginal references: Heb. instruments of strength.; † Heb. to the heart of all, &c.