'Be Holy' in the Bible

"'All the days of the vow of his separation no razor may be used on his head until the time is fulfilled for which he separated himself to the Lord. He will be holy, and he must let the locks of hair on his head grow long.

All the days of his separation he must be holy to the Lord.

Thus you will remember and obey all my commandments and be holy to your God.

put fire in them, and set incense on them before the Lord tomorrow, and the man whom the Lord chooses will be holy. You take too much upon yourselves, you sons of Levi!"

You are to eat it as a most holy offering; every male may eat it. It will be holy to you.