'Clean' in the Bible

and the seven angels who had the seven plagues came out of the temple, clothed in linen, clean and bright, and girded around their chests with golden sashes.

It was given to her to clothe herself in fine linen, bright and clean; for the fine linen is the righteous acts of the saints.

And the armies which are in heaven, clothed in fine linen, white and clean, were following Him on white horses.