'Be Clean' in the Bible

He, shall cleanse himself from sin therewith on the third day, then on the seventh day, shall he be clean, - but if he cleanse not himself from sin on the third day, then on the seventh day, shall he not be clean,

and the clean person shall sprinkle upon the unclean, on the third day, and on the seventh day, - so shall he cleanse himself from sin, on the seventh day, and shall wash his clothes, and bathe in water and be clean in the evening.

whatsoever thing can go into fire, ye shall pass through fire and it shall be clean, only with the water of separation, shall ye cleanse it (from sin). But whatsoever cannot go into fire, ye shall pass through water.

And ye shall wash your clothes on the seventh day, and be clean, - and after-wards, shall ye come into the camp.