Haggai 2:13

Then said Haggai, If one that is unclean because of a dead body touches any of these, shall it be unclean? And the priests answered and said, It shall be unclean.

Leviticus 22:4-6

Whatsoever man of the descendants of Aaron who is a leper, or has a discharge; he shall not eat of the holy things, until he is clean. And whoever touches any thing that is defiled by a dead body, or a man who has had an emission of semen;

Numbers 5:2-3

Command the children of Israel, that they put out of the camp every leper, and every one that has a discharge, and whosoever is defiled by the dead:

Numbers 9:6-10

And there were certain men, who were defiled by the dead body of a man, that they could not keep the passover on that day: and they came before Moses and before Aaron on that day:

Numbers 19:11-22

He that touches the dead body of any man shall be unclean seven days.

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