'Separated' in the Bible

'At that time hath Jehovah separated the tribe of Levi, to bear the ark of the covenant of Jehovah, to stand before Jehovah, to serve Him, and to bless in His name, unto this day,

Thou dost not sow thy vineyard with divers things, lest the fulness of the seed which thou dost sow, and the increase of the vineyard, be separated.

and thou hast said before Jehovah thy God, I have put away the separated thing out of the house, and also have given it to the Levite, and to the sojourner, and to the orphan, and to the widow, according to all Thy command which Thou hast commanded me; I have not passed over from Thy commands, nor have I forgotten.

and Jehovah hath separated him for evil, out of all the tribes of Israel, according to all the oaths of the covenant which is written in this book of the law.