'Sanctify' in the Bible

and said unto them, Ye are the heads of the fathers houses of the Levites: sanctify yourselves, both ye and your brethren, that ye may bring up the ark of Jehovah, the God of Israel, unto the place that I have prepared for it.

The sons of Amram: Aaron and Moses; and Aaron was separated, that he should sanctify the most holy things, he and his sons, for ever, to burn incense before Jehovah, to minister unto him, and to bless in his name, for ever.