'Unclean' in the Bible

Therefore, be careful not to drink wine or [any other] intoxicating drink, and do not eat anything [ceremonially] unclean.

But He said to me, ‘Behold, you shall conceive and give birth to a son, and now you shall not drink wine or [any other] intoxicating drink, nor eat anything [ceremonially] unclean, for the boy shall be a Nazirite to God from birth to the day of his death.’”

She may not eat anything that comes from the vine nor drink wine or [any other] intoxicating drink, nor eat anything [ceremonially] unclean. She shall observe everything that I commanded her.”