The Holy Eucharist is the source and summit of the interior life and the very life of the Catholic Church. Every time Mass is celebrated, the sacrifice of Our Lord and Savior Jesus Christ on Calvary is re-presented in an unbloody manner affording the priest celebrant and all congregants who participate in the Mass an infinite amount of sanctifying grace. That grace can be applied to specific intentions (for a deceased loved one, for someone who is ill, for a special occasion, etc) whether of the priest celebrant or the faithful. (CNA).