"Put the holy ark in the Temple that Solomon, the son of Israel's King David, built. It will no longer be a burden on their shoulders. Now go serve the LORD your God and his people Israel. Prepare yourselves by divisions according to your ancestral households, keeping to what King David of Israel and his son Solomon wrote about this. Verse ConceptsWriting

Solomon offered burnt offerings to the LORD on the LORD's altar that he had built in front of the porch of the Temple, acting in compliance with the daily rule by offering them in conformity to commands issued by Moses for the Sabbaths, the New Moons, the three annual festivals (the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Tents). Following proscriptions laid down by his father David, Solomon appointed divisions of priests for their service as well as descendants of Levi for duties of praise and ministry before the priests consistent with the daily rules. Furthermore, because David, the man of God, had commanded it, Solomon also appointed gatekeepers to serve by divisions at every gate of the Temple. read more.
They scrupulously adhered to the orders issued by the king to the priests and descendants of Levi in everything, including matters pertaining to operation of the treasuries. And so Solomon completed all of the work, from the day that the foundation stone of the LORD's Temple was laid until the LORD's Temple was completely finished.

They carried out their service obligations to their God and their service obligations of purification according to what David and his son Solomon had commanded.