New King James Version
to be a memorial to the children of Israel that no outsider, who is not a descendant of Aaron, should come near to offer incense before the LORD, that he might not become like Korah and his companions, just as the LORD had said to him through Moses.

King James Bible
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.

American Standard Version
to be a memorial unto the children of Israel, to the end that no stranger, that is not of the seed of Aaron, come near to burn incense before Jehovah; that he be not as Korah, and as his company: as Jehovah spake unto him by Moses.

Berean Study Bible
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.

Douay-Rheims Bible
That the children of Israel might have for the time to come wherewith they should be admonished, that no stranger or any one that is not of seed of Aaron should come near to offer incense to the Lord, lest he should suffer as Core suffered, and all his congregation, according as the Lord spoke to Moses.

English Revised Version
to be a memorial unto the children of Israel, to the end that no stranger, which is not of the seed of Aaron, come near to burn incense before the LORD; that he be not as Korah, and as his company: as the LORD spake unto him by the hand of Moses.

World English Bible
to be a memorial to the children of Israel, to the end that no stranger, who isn't of the seed of Aaron, comes near to burn incense before Yahweh; that he not be as Korah, and as his company: as Yahweh spoke to him by Moses.

Young's Literal Translation
a memorial to the sons of Israel, so that a stranger who is not of the seed of Aaron doth not draw near to make a perfume before Jehovah, and is not as Korah, and as his company, -- as Jehovah hath spoken by the hand of Moses to him.

Numbers 16:40 Additional Translations ...