Unclean, unclean

• This expression means to be morally impure.
• The phrase is derived from The Bible, Leviticus 13:45 KJV.

In the Bible

• In the Ancient World any contact with a person suffering from Leprosy was considered to make them become impure in a ceremonial sense.
• The Talmud obliged the Leper to cry out ‘unclean, unclean’ if he approached an Israelite.