“Be careful during an outbreak of leprosy, that you diligently observe and do according to all that the Levitical priests teach you; just as I have commanded them, so you shall be careful to do.

Now four men who were lepers were at the entrance of the [city’s] gate; and they said to one another, “Why should we sit here until we die?

And every

“Speak to the children of Israel, and say to them, ‘When any man has a bodily discharge, his discharge is unclean.

And whosoever

But there were certain men who were [ceremonially] unclean because of [touching] the dead body of a man, so they could not observe the Passover on that day; so they came before Moses and Aaron that same day.

‘The one who touches the dead body of any person shall be unclean for seven days.

Camp outside the camp for seven days; whoever has killed any person and whoever has touched any dead body, purify yourselves and your captives, on the third day and on the seventh day.

Then the Lord said to Moses, “Speak to the priests, the sons of Aaron, and say to them:

‘No one shall defile himself [that is, become ceremonially unclean] for the dead among his people [by touching a corpse or assisting in preparing it for burial],

General references

“If there is any man among you who is [ceremonially] unclean because of nocturnal emission, then he must go outside the camp; he shall not come back to the camp.

Then Haggai said, “If one who is [ceremonially] unclean because of [contact with] a corpse touches any of these [articles of food], will it be unclean?” And the priests answered, “It will be unclean.” [Ceremonial uncleanness, like sin, is infectious.]