40 to be a memorial to the children of Yisra'el, to the end that no stranger, who isn't of the seed of Aharon, comes near to burn incense before the LORD; that he not be as Korach, and as his company: as the LORD spoke to him by Moshe.
40
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.