'Contact' in the Bible

"Command the {Israelites}: they must send everyone from the camp who is afflicted with a rash, everyone with a fluid discharge, and everyone unclean through [contact with] a corpse.

Your hands [were] not tied and your feet [were] not in contact with bronze fetters. You have fallen as one who falls before sons of wickedness." Then {all the people wept over him again}.

Then Haggai said, "If one who is unclean from contact with a corpse touches any of these, will it become unclean?" The priests answered, "Yes, it will be become unclean."