Deuteronomy 33:8-11 NASB
8 Of Levi he said,“Let Your Thummim and Your Urim belong to [h]Your godly man, Whom You proved at Massah, With whom You contended at the waters of Meribah; 9 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. 10 “They shall teach Your ordinances to Jacob,
Exodus 32:25-27 NASB
25 Now when Moses saw that the people were [n]out of control—for Aaron had let them [o]get out of control to be a derision among [p]their enemies— 26 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. 27 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 [q]neighbor
Was Moses referring to this incident in Deuteronomy?.