Numbers 16:40

to be a reminder to the people of Israel, so that no outsider, who is not of the descendants of Aaron, should draw near to burn incense before the Lord, lest he become like Korah and his company—as the Lord said to him through Moses.

as the Lord directed him through Moses. This was to remind the Israelites that no one except a descendant of Aaron should come to burn incense before the Lord, or he would become like Korah and his followers.

just as the Lord commanded him through Moses. It was to be a reminder for the Israelites that no unauthorized person outside the lineage of Aaron should approach to offer incense before the Lord and become like Korah and his followers.

This would warn the Israelites that no unauthorized person—no one who was not a descendant of Aaron—should ever enter the Lord’s presence to burn incense. If anyone did, the same thing would happen to him as happened to Korah and his followers. So the Lord’s instructions to Moses were carried out.

it was a memorial for the Israelites, so that no strange man who is not from the offspring of Aaron should approach the presence of Yahweh to burn a smoke offering; he will not be like Korah and his company, just as Yahweh had spoken to him by the hand of Moses.

To be a memorial unto the children of Israel, that no stranger, which is not of the seed of Aaron, come near to offer incense before the Lord; that he be not as Korah, and as his company: as the Lord said to him by the hand of Moses.