The destruction of the cities of the plain took place at dawn of the sixteenth day of Nisan, for the reason that there were moon and sun worshippers among the inhabitants. God said: "If I destroy them by day, the moon worshippers will say, Were the moon here, she would prove herself our savior; and if I destroy them by night, the sun worshippers will say, Were the sun here, he would prove himself our savior. I will therefore let their chastisement overtake them on the sixteenth day of Nisan at an hour at which the moon and the sun are both in the skies."