ציטירנדיקער פּירוש אויף תהילים 10:15

One may also explain the wording of this prayer in a different way. Yaakov prayed for what he needed immediately and for his needs during future generations. As far as his immediate needs were concerned, he needed to be saved from “my brother.” During future generations, throughout a good part of Jewish history, he or his descendants would need to be saved “from Esau.” Concerning such future times, David also formulated a prayer in Psalms 10,15 when he said: שבור זרוע רשע, “break the power (arm) of the wicked!”