Thematic Bible: Zeal against idolatry a cause of their appointment

then Moses stood in the gate of the camp, and said, "Whoever is for the LORD, come to me!" And all the sons of Levi gathered together to him. He said to them, "Thus says the LORD, the God of Israel, 'Every man of you put his sword upon his thigh, and go back and forth from gate to gate in the camp, and kill every man his brother, and every man his friend, and every man his neighbor.'" So the sons of Levi did as Moses instructed, and about three thousand men of the people fell that day.

Who said of his father and his mother, 'I did not consider them'; And he did not acknowledge his brothers, Nor did he regard his own sons, For they observed Your word, And kept Your covenant. "They shall teach Your ordinances to Jacob, And Your law to Israel They shall put incense before You, And whole burnt offerings on Your altar.