He is to purify himself on the third day and on the seventh day. Then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.
“Any of you who has killed anyone or touched the body of anyone who has been killed must stay outside the camp for seven days. You must purify yourselves, on the third and seventh days—you and your captives.
Then he said to me, “These are the ones coming out of the great tribulation. They have washed their robes and made them white in the blood of the Lamb.