A person or thing that did not meet certain conditions. Something unclean could not be part of religious services. God set the conditions for people and things to be included in worshiping him. People who were unclean could be cleansed. Then they could worship again.
http://biblica.com/niv/appendix/concordance_resultsingle.php?rowid=115
Topics: Sin, Worship, Unclean
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