Numbers 17:5, 8 just as the LORD had directed him through Moses. This was to be a reminder to the Israelites that no unauthorized person, no one who was not a descendant of Aaron, should draw near to offer incense be Then Moses and Aaron came to the front of the tent of meeting | New American Bible, revised edition (NABRE)

Numbers 17:5 NABRE

just as the LORD had directed him through Moses. This was to be a reminder to the Israelites that no unauthorized person, no one who was not a descendant of Aaron, should draw near to offer incense before the LORD, lest he meet the fate of Korah and his faction.

Read Numbers 17