We had a change of guard at our chapel recently and we had different visiting priests for about two months until our assigned priests arrived. One visiting priest gave a sermon about how "conspiracy theories" were bad news, and that Catholics shouldn't bother with them if they seriously want to get to Heaven. The crux of his argument was, what if you've figured it all out, and then your life ends, but you haven't spent any time on your immortal soul. Will you console yourself saying, "Well, at least they didn't trick me?" I found his sermon to be a bit lacking, but then, on my knees praying, after having received the Blessed Sacrament, I felt more inclined to be thanking God for having been merciful enough to allow me to consume Him, to allow me into His Communion, and for sending us this validly ordained priest, to turn bread and wine into His Body and Blood, and allowing us to receive Him. This put everything into perspective for me. Since then, I find myself much more grateful, and less picky about the sermons. The priest we finally got, gives great sermons, and I am evermore thankful for being so lucky. But even if we didn't have a priest who gave good sermons, or a priest whom I could easily understand, I see that it is not the sermon that is the important part of the Holy Mass. As long as the priest is giving authentic Catholic doctrine, then we should be thankful that he is there to provide us with the Mass.