Numbers 19:7

7Then the priest must wash his clothes and bathe his body in water; after that he may enter the camp, but he will remain ceremonially
unclean: When something is clean, it is holy or acceptable to God. When it is unclean, it is unholy (such as an unclean spirit). The term can be used in a ritual sense to apply to moral standards for living.
unclean until evening.
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