ציטירנדיקער פּירוש אויף תהילים 37:15

There is also a moral/ethical message in Balak's words. His words boomeranged upon himself. When he said ארה לי, "curse for me," this turned out to be "curse me." Had he not used these words his daughter Kosbi would not have been killed by Pinchas. Bileam's coming to Moav and failing to curse the Israelites also became the reason that Balak was forced to return to Midian and be killed by the sword during the punitive expedition involving 12.000 Israelites as described in 31,8. If Bileam had not travelled all the way to Moav and assured these people that they were safe from the Israelites until the distant future, Balak would have remained on the throne in Moav, secure from all the wars the Israelites would be involved in. As it was, he became the personification of Psalms 37,15: "their swords shall pierce their own hearts."