Exodus 28:43

28:43 They shall be on Aaron, and on his sons, when they go in to the tent of meeting, or when they come near to the altar to minister in the holy place; that they don't bear iniquity, and die: it shall be a statute forever to him and to his descendants after him.
-World English Bible

Other Translation

28:43 And they shall be upon Aaron, and upon his sons, when they come in unto the tabernacle of the congregation, or when they come near unto the altar to minister in the holy [place]; that they bear not iniquity, and die: [it shall be] a statute for ever unto him and his seed after him.
-King James Version