He shall purify himself with the water on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.
And he shall sprinkle upon him that is to be cleansed from the leprosy seven times, and shall pronounce him clean, and shall let the living bird loose into the open field.
And you must abide outside the camp seven days: whosoever has killed any person, and whosoever has touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.
And I said unto him, Sir, you know. And he said to me, These are they who came out of the great tribulation, and have washed their robes, and made them white in the blood of the Lamb.