Exodus 32:26 in the King James Version
Then Moses stood in the gate of the camp, and said, Who is on the LORD’s side? let him come unto me. And all the sons of Levi gathered themselves together unto him.
Context
25 When Moses saw that the people were out of control, (for Aaron had let them lose control, causing derision among their enemies),
26 then Moses stood in the gate of the camp, and said, “Whoever is on the LORD’s side, come to me!” All the sons of Levi gathered themselves together to him.
27 He said to them, “The LORD, the God of Israel, says, ‘Every man put his sword on his thigh, and go back and forth from gate to gate throughout the camp, and every man kill his brother, and every man his companion, and every man his neighbor.’”