'Unclean' in the Bible

You put unclean bread on my altar. And you say, How have we made it unclean? By your saying, The table of the Lord is of no value.

But you make it unholy by saying, The Lord's table has become unclean, and his food is of no value.

Judah has been acting falsely, and a disgusting thing has been done in Jerusalem; for Judah has made unclean the holy place of the Lord which is dear to him, and has taken as his wife the daughter of a strange god.