15 The priests must not desecrate the sacred offerings the Israelites present to the LORD

Read Leviticus 22:15 Using Other Translations

And they shall not profane the holy things of the children of Israel, which they offer unto the LORD;
They shall not profane the holy things of the people of Israel, which they contribute to the LORD,
The priests must not let the Israelites defile the sacred offerings brought to the LORD