The intransigence of God’s love for us despite the brutality of the Crucifixion is the good news of great joy. However, it does not propagate itself. God gave us the Mass to serve as the vehicle that propagates the good news of great joy from then and there across space and time to us here and now. Propagation of the good news of great joy is the purpose of the Mass. God did not invent the Mass to propagate his real presence. The real presence is not the good news of great joy. His real presence is incidental to the good news of great joy - necessary but not sufficient. God established the institution of the Mass to remind us through his bloody wounds that our God is the God who forgave us for the evil that we did to him. Wow! What a God is our God!