TSK · Luke 1:9

Aaron is to burn sweet incense on it morning by morning; when he attends to the lamps he is to burn incense.

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.

But Aaron and his descendants offered sacrifices on the altar for burnt offerings and on the altar for incense as they had been assigned to do in the most holy sanctuary. They made atonement for Israel, just as God’s servant Moses had ordered.

But once he became powerful, his pride destroyed him. He disobeyed the LORD his God. He entered the LORD’s temple to offer incense on the incense altar.

So with these things prepared like this, the priests enter continually into the outer tent as they perform their duties.