Leviticus 22:4-6

Thomson(i) 4 though a man be of the seed of Aaron the priest, yet if he be a leper, or hath a gonorrhea, he shall not eat of the holy things until he be cleansed. And with respect to him who toucheth any uncleanness of the dead, or the man from whom seminal matter may proceed; 5 or who may touch any unclean reptile which may defile him; or any man, by whom he may be defiled, whatever his uncleanness may be; 6 the person who shall touch such things shall be unclean until evening. He shall not eat of the holy things unless he wash his body with water,