Comentario sobre Números 22:28

זה שלש רגלים THESE THREE TIMES — By these words he suggested to him: You seek to root out a nation that celebrates three festivals (שלש רגלים) annually?! (Midrash Tanchuma, Balak 9).

ויפתח ה' את פי האתון, He provided her with the ability to speak; we are familiar with the verse in Psalms 51,17 which we recite daily before our prayers, asking G’d ה' שפתי תפתח, O Lord please open my lips.” G’d went to all these lengths in order to provide Bileam with yet another incentive to become a penitent. Solomon in Proverbs 16,1 points out מה' מענה לשון, “the answer of the tongue comes from G’d.” Even when man is not prepared to change his way for the better, G’d, on occasion, initiates a step in this direction; how much more so will He extend a helping hand to sinners who seek to mend their ways! All of this in order to save the sinner from perdition.