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

Exodus 32:27
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 32:29
Afterward, Moses said, "Today you have been ordained for service to the LORD, since each man went against his son and his brother; so the LORD has bestowed a blessing on you this day."

Exodus 32:35
And the LORD sent a plague on the people because of what they had done with the calf that Aaron had made.

Numbers 25:7
On seeing this, Phinehas son of Eleazar, the son of Aaron the priest, got up from the assembly, took a spear in his hand,

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.

Psalm 99:8
O LORD our God, You answered them. You were a forgiving God to them, yet an avenger of their misdeeds.

And the children of Levi did according to the word of Moses: and there fell of the people that day about three thousand men.