All the heave offerings of the holy things, which the sons of Israel offer to Jehovah, I have given you and your sons and your daughters with you, by a law forever. It is a covenant of salt forever before Jehovah to you and to your seed with you.

This is the law of the Nazarite who has vowed his offering to Jehovah for his separation, besides that which he is able to get. According to the vow which he vowed, so he must do according to the law of his separation.