TSK · Exodus 30:16

This day will become a memorial for you, and you will celebrate it as a festival to the LORD– you will celebrate it perpetually as a lasting ordinance.

It was a memorial for the Israelites, that no outsider who is not a descendant of Aaron should approach to burn incense before the LORD, that he might not become like Korah and his company– just as the LORD had spoken by the authority of Moses.

So the king summoned Jehoiada the chief priest, and said to him,“Why have you not made the Levites collect from Judah and Jerusalem the tax authorized by Moses the LORD’s servant and by the assembly of Israel at the tent containing the tablets of the law?”

for the loaves of presentation and for the regular grain offerings and regular burnt offerings, for the Sabbaths, for the new moons, for the appointed meetings, for the holy offerings, for the sin offerings to make atonement for Israel, and for all the work of the temple of our God.