“This is what the Lord, Israel’s God, says: Each of you, strap on your sword! Go back and forth from one end of the camp to the other. Each of you, kill your brother, your friend, and your neighbor!” Exodus 32:27
The Levites are one of Israeli tribes. They are Lord's priests mostly dedicated to Him. In ancient times they was responsible for taking care of the Ark and performing work in the Temple. In modern society they are playing very special role mobilizing to acting in the name of God and to prayers. But not only.
Many believers have a false image of the God. After the Jesus Christs they see him as merciful and loving all man. It's partialy true. The God is full of mercy and compasion but not to all. As the Lord said: “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.” (Romans 9:15)
The God of Israel is a jealous and vengeful God and can be very bloody and cruel for his Enemies. He is able to track them down even to 4th generation. And it is a Levites that helps him the most.
When Isrealites has turned back from the Lord and started to pray to golden bull calf YHWE was very angry on his people. He has commanded Moses to call everyone that was still on the side of the Lord and then came Levites. Moses ordered them to kill their fathers, brothers and friends. And they did it.
The 3000 people was on that day slain by Levites. And the Lord has blessed House of Levi.
It is so even these days. Beside the 9 Miracles the Lord is expecting to happen he will also request 3000 souls of Maltans that was mostly involved into devil's works. A 3000 of them. From the top of the head to the fingers. From leaders to executioners.
And the Levites will need to bring satisfaction to the Lord if they want to receive his blessing. Blessing to themselves and foremost blessing for the Planet Earth.
You can try to clear your surrounding. To purify it from all those that are loyal to the Lord but You will fail in this, They will be rising like mushrooms after the rain. As the day of the Judgment will be nearing they will be growing in the number. Ready to slain You at the order of the Lord.