Today's Gospel reading came from Mark 8. Jesus openly taught his disciples that he must suffer greatly, be rejected and killed, and rise after three days. Peter took him aside and began to rebuke him. Jesus then, before all the other disciples, rebuked Peter, saying, "Get behind me, Satan. You are thinking not as God does, but as human beings do." Naturally, to be correct, we must think as God does. And the only way to achieve that is to be in union with him.
I heard on radio while driving back home after Mass two speakers talking about the Catholic Church (and other denominations and sects). It shocked me to hear that in their opinion, the teachings of the Church are just human inventions ~ they have absolutely no understanding of what I and many of you the faithful believe in. Here's an example of thinking totally as human beings do. At the end, as I had suspected, the program turned out to be an atheist one. One interesting thing though I caught in the last minute or so ~ when one of the speakers asked the other if religions will all be gone a couple of thousand years from now, the other said probably not because people always want to look for a god. This just confirmed what St. Augustine said.