Israele aderì al culto di Baal-Peor e l’ira del Signore si accese contro Israele.
Il Signore disse a Mosè: «Prendi tutti i capi del popolo e fa’ appendere al palo i colpevoli, davanti al Signore, al sole, perché l’ira ardente del Signore si allontani da Israele».

And Israel joined himself unto Baalpeor: and the anger of the Lord was kindled against Israel.
And the Lord said unto Moses, ‘Take all the heads of the people and hang them up before the Lord against the sun, that the fierce anger of the Lord may be turned away from Israel.

Changing religion can be dangerous. They must die, simple.