'Set apart' in the Bible

At that time the Lord set apart the tribe of Levi to carry the ark of the Lord's covenant, to stand before the Lord to serve him, and to formulate blessings in his name, as they do to this very day.

You must set apart for the Lord your God every firstborn male born to your herds and flocks. You must not work the firstborn of your bulls or shear the firstborn of your flocks.

you must set apart for yourselves three cities in the middle of your land that the Lord your God is giving you as a possession.

Therefore, I am commanding you to set apart for yourselves three cities.

with the harvest of the earth and its fullness and the pleasure of him who resided in the burning bush. May blessing rest on Joseph's head, and on the top of the head of the one set apart from his brothers.