He told them, "This is what the LORD, the God of Israel, says: 'Each of you men is to fasten his sword to his side, go back and forth through the camp from gate to gate, and slay his brother, his friend, and his neighbor.'"

Exodus 32:26
So Moses stood at the entrance to the camp and said, "Whoever is for the LORD, come to me." And all the Levites gathered around him.

Exodus 32:28
The Levites did as Moses commanded, and that day about three thousand of the people fell dead.

Numbers 25:5
So Moses told the judges of Israel, "Each of you must kill all of his men who have joined in worshiping Baal of Peor."

Deuteronomy 33:9
He said of his father and mother, 'I do not consider them.' He disregarded his brothers and did not know his own sons, for he kept Your word and maintained Your covenant.

And he said to them, Thus said the LORD God of Israel, Put every man his sword by his side, and go in and out from gate to gate throughout the camp, and slay every man his brother, and every man his companion, and every man his neighbor.