The following is from an excellent homily by an FSSP priest, which you may listen to here. This is not an exact transcript – I’ve used many of the priest’s own words, but have done a lot of paraphrasing as well – and it may be a little rough…sorry! But I think the point still comes across, and I encourage you to listen to the recording, more than once, even.
Christ lives in Heaven interceding for us principally by His sacrifice on Calvary. Holy Mass is the projection of this continual sacrifice. It is where we are united to Christ, where we receive Heavenly Food that gives life to the soul. The points being made in this homily are these: For Mass and Holy Communion we must fix our intentions at the offertory; we must make our Communion for a specific purpose; and we must make a good and long thanksgiving.