2 Chronicles 8:12-13
12-13Then Solomon offered Whole-Burnt-Offerings to God on the Altar of God that he had built in front of The Temple porch. He kept to the regular schedule of worship set down by Moses: Sabbaths, New Moons, and the three annual feasts of Unraised Bread (Passover), Weeks (Pentecost), and Booths.
14-15He followed the practice of his father David in setting up groups of priests carrying out the work of worship, with the Levites assigned to lead the sacred music for praising God and to assist the priests in the daily worship; he assigned security guards to be on duty at each gate—that's what David the man of God had ordered. The king's directions to the priests and Levites and financial stewards were kept right down to the fine print—no innovations—including the treasuries.