'Set Apart' in the Bible

"Set apart to me every firstborn male -- the first offspring of every womb among the Israelites, whether human or animal; it is mine."

There I will meet with the Israelites, and it will be set apart as holy by my glory.

"So I will set apart as holy the tent of meeting and the altar, and I will set apart as holy Aaron and his sons, that they may minister as priests to me.