Exodus 32:25-29 Douay-Rheims 1899 American Edition (DRA)
25 And when Moses saw that the people were naked, (for Aaron had stripped them by occasion of the shame of the filth, and had set them naked among their enemies,)
26 Then standing in the gate of the camp, he said: If any man be on the Lord's side let him join with me. And all the sons of Levi gathered themselves together unto him:
27 And he said to them: Thus saith the Lord God of Israel: Put every man his sword upon his thigh: go, and return from gate to gate through the midst of the camp, and let every man kill his brother, and friend, and neighbour.
28 And the sons of Levi did according to the words of Moses, and there were slain that day about three and twenty thousand men.
29 And Moses said: You have consecrated your hands this day to the Lord, every man in his son and in his brother, that a blessing may be given to you.