Matthew Henry on 2 Chronicles 8:12–end
Here is, I. Solomon's devotion. The building of the temple was in order to the service of the temple. Whatever cost he was at in rearing the structure, if he had neglected the worship that was to be performed there, it would all have been to no purpose. Assisting the devotion of others will not atone for our own neglects. When Solomon had built the temple, 1. He kept up the holy sacrifices there, according to the law of Moses, Ch2 8:12, Ch2 8:13. In vain had the altar been built, and in vain had fire come down from heaven, if sacrifices had not been constantly brought as the food of the altar and the fuel of that fire. There were daily sacrifices, a certain rate every day, as duly as the day…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 8:15
SOLOMON'S FESTIVAL SACRIFICES. (Ch2 8:15-18)
they departed not from the commandment of the king--that is, David, in any of his ordinances, which by divine authority he established.
unto the priests and Levites concerning any matter, or concerning the treasures--either in regulating the courses of the priests and Levites, or in the destination of his accumulated treasures to the construction and adornment of the temple.
Adam Clarke on 2 Chronicles 8:15
The commandment of the king - The institutions of David.
John Gill on 2 Chronicles 8:15
And they departed not from the commandment of the king unto the priests and Levites,.... The priests and Levites departed not from it, not from the commandment of Solomon, according to the order of David, but in all things obeyed it:
concerning any matter; which related to the office of either of them, sacrificers, singers, or porters:
or concerning the treasures; such of the Levites as had the care of them were faithful to their trust, see 1 Chronicles 26:20, &c.
Keil & Delitzsch on 2 Chronicles 8:12-16