Numbers 16:40
just as the LORD commanded him through Moses. This was to be a reminder to the Israelites that no outsider who is not a descendant of Aaron should approach to offer incense before the LORD, lest he become like Korah and his followers.

1 Samuel 13:9-14
So he said, “Bring me the burnt offering and the peace offerings.” And he offered up the burnt offering. / Just as he finished offering the burnt offering, Samuel arrived, and Saul went out to greet him. / “What have you done?” Samuel asked. And Saul replied, “When I saw that the troops were deserting me, and that you did not come at the appointed time and the Philistines were gathering at Michmash, ...

1 Kings 12:31
Jeroboam also built shrines on the high places and appointed from every class of people priests who were not Levites.

2 Chronicles 19:11
Note that Amariah, the chief priest, will be over you in all that pertains to the LORD, and Zebadiah son of Ishmael, the ruler of the house of Judah, in all that pertains to the king. And the Levites will serve as officers before you. Act resolutely; may the LORD be with the upright!”

2 Chronicles 23:6
No one is to enter the house of the LORD except the priests and those Levites who serve; they may enter because they are consecrated, but all the people are to obey the requirement of the LORD.

2 Chronicles 29:11
Now, my sons, do not be negligent, for the LORD has chosen you to stand before Him, to serve Him, to minister before Him, and to burn incense.”

2 Chronicles 30:16
They stood at their prescribed posts, according to the Law of Moses the man of God. The priests splattered the blood, which they received from the hand of the Levites.

2 Chronicles 35:3
To the Levites who taught all Israel and were holy to the LORD, Josiah said: “Put the holy ark in the temple built by Solomon son of David king of Israel. It is not to be carried around on your shoulders. Now serve the LORD your God and His people Israel.

Leviticus 10:1-2
Now Aaron’s sons Nadab and Abihu took their censers, put fire in them and added incense, and offered unauthorized fire before the LORD, contrary to His command. / So fire came out from the presence of the LORD and consumed them, and they died in the presence of the LORD.

Leviticus 16:1-2
Now the LORD spoke to Moses after the death of two of Aaron’s sons when they approached the presence of the LORD. / And the LORD said to Moses: “Tell your brother Aaron not to enter freely into the Most Holy Place behind the veil in front of the mercy seat on the ark, or else he will die, because I appear in the cloud above the mercy seat.

Exodus 30:7-8
And Aaron is to burn fragrant incense on it every morning when he tends the lamps. / When Aaron sets up the lamps at twilight, he must burn the incense perpetually before the LORD for the generations to come.

Hebrews 5:4
No one takes this honor upon himself; he must be called by God, just as Aaron was.

Hebrews 7:13-14
He of whom these things are said belonged to a different tribe, from which no one has ever served at the altar. / For it is clear that our Lord descended from Judah, a tribe as to which Moses said nothing about priests.

Hebrews 9:6-7
When everything had been prepared in this way, the priests entered regularly into the first room to perform their sacred duties. / But only the high priest entered the second room, and then only once a year, and never without blood, which he offered for himself and for the sins the people had committed in ignorance.

Matthew 12:4
He entered the house of God, and he and his companions ate the consecrated bread, which was not lawful for them to eat, but only for the priests.