'Unclean' in the Bible

“In that day,” declares the Lord of hosts, “I will cut off the names of the idols from the land, and they will no longer be remembered. I will also remove the [false] prophets and the unclean spirit from the land.

Every cooking pot in [all the houses in] Jerusalem and in Judah will be holy to the Lord of hosts, and all who sacrifice will come and take them and boil [their sacrifices] in them. And in that day there will no longer be a Canaanite [that is, any godless or spiritually unclean person, whether Jew or Gentile] in the house of the Lord of hosts.