In this respect, liberal or progressive theology is myopic. It sees only what it wants to see and it can only see through the lens of what sounds reasonable and right now. It does not intend to be the way, the truth, and the life forever but what is good now and what works now. Indeed, this is the greatest failing of liberal and progressive Christianity. It is tied to the moment and not to the past or the future. It is wedded to the worldview now and cannot escape this temporal prison. On the other hand, catholic Christianity is by nature conservative. It does value what was received from the past and it is concerned about what is passed on to the future and the criterion for this is always outside the self of reason and understanding but in the Word and works of God.
It is unreasonable to think of sin as arbitrary wrongs that are not adjusted or minimized by circumstances or the changing mood or judgments of the times. It is unreasonable to think of sin as sin without mitigating circumstances to make some of those sins less egregious than the same sin in other contexts. It is unreasonable to think that anyone might have to deny themselves and their desires and become new and different people in the process. It is unreasonable to think that worship should reflect the values of God and not appeal to the sense of the times or the desires of those in the pews. It is unreasonable to think that all life has the same intrinsic value and no life should be ended for the sake of the person or another. It is unreasonable to meet God in the splash of water, the voice of His Word, the taste of bread and wine. In all of these, it is completely unreasonable except for the fact that God has reasoned it all this way in His heart and out of love for us. If we are to endure, we need an anchor more secure than what seems reasonable or right in the moment. We need nothing less than the Word of God that endures forever and for a Church built upon this solid foundation. We do not need to make the Church relevant for the promise of life to a people marked with death has its own relevance in every age and generation.
Why would we dwell upon what we think God would want when we have the record of His voice still speaking through His Word? Why would we make the test of truth reason or popularity or acceptance by the judgment of the present moment? There is so much more and it beckons us to get past what seems reasonable or comfortable to meet God where He has planted His promise in time to bring us to eternity. Why would we dwell upon what works for us now if it has no power to work for us the blessing of everlasting life? Indeed. A good thing to hear on a day dedicated to deception.