The Levites denied even their closest relationships with those who had worshipped the golden calf. The killing of the idol worshippers separated the sons of Levi from their brothers and qualified them to have the priesthood with the Urim and the Thummim (Deut. 33:8-10). God intended that the entire nation of Israel would be a kingdom of priests (Exo. 19:6), but because of the worship of the golden calf, the majority of the children of Israel lost the priesthood. The priesthood was given to a single tribe, the tribe of Levi.
God’s intention is that every believer in Christ, every child of God, would be a priest (Rev. 1:6; 5:10). However, through the centuries impure worship has caused the majority of the believers to lose their priesthood. The relatives of the Levites signify ourselves, that part of our being which participates in the worship of idols. If we “kill” these impure worshippers, we will be the overcomers who keep the priesthood; otherwise, we will be counted among those who have lost the priesthood.