'Set apart' in the Bible

Then Moses set apart three cities beyond the Jordan toward the sunrise,

At that time LORD set apart the tribe of Levi, to bear the ark of the covenant of LORD, to stand before LORD to minister to him, and to bless in his name, to this day.

thou shall set apart three cities for thee in the midst of thy land, which LORD thy God gives thee to possess it.

Therefore I command thee, saying, Thou shall set apart three cities for thee.