'Unclean' in the Bible

Now be careful! Do not drink wine or beer, and do not eat any food that will make you ritually unclean.

He said to me, 'Look, you will conceive and have a son. So now, do not drink wine or beer and do not eat any food that will make you ritually unclean. For the child will be dedicated to God from birth till the day he dies.'"

She should not drink anything that the grapevine produces. She must not drink wine or beer, and she must not eat any food that will make her ritually unclean. She should obey everything I commanded her to do."