Zechut Avot

At the end of Tehilim 68 it says that G-d will give Oz and Ta'atzumot to the people. What is Oz? Ramchal in Tikkun 26, and others, hint and say that Oz is Moshiach, Moshiach ben Yosef. What is Ta'atzumot? It is extraordinary power. The word is related to Atzma'ut, independence. All this is given by G-d to His people, because of Zechut Avot, renewed Zechut Avot, Avraham, Yitzchak and Yisrael (Shemot 32:13), which saves from Galut (Ramchal, Tikkun 37). The independence is in the merit of Yisrael, as explained. The Oz is in the merit of Yitzchak, as explained. The Ta'atzumot is in the merit of Avraham. It is Ayil Meshulash.