'Unclean' in the Bible

And Haggai saith, 'If the unclean of body doth come against any of these, is it unclean?' And the priests answer and say, 'It is unclean.'

And Haggai answereth and saith, 'So is this people, and so is this nation before Me -- an affirmation of Jehovah -- and so is every work of their hands, and that which they bring near there -- it is unclean.