The Church becomes obsolete when she forgets how to church. (yes, that is now a verb) I’m talking about living the Catholic way of life, and the center of that, the crux upon which everything else is based, the very core of our being, is found in the Mass; it is Jesus. At Mass we eat his flesh and we drink his blood so that we will have true life within us. If we Catholics do not get Mass right, we get nothing right.
It is this that makes us the Church that is, that we are not static, but on the move towards God. Secularists want us to believe we are a Church that was, a superstitious few clinging to a relic of the past. Others want us to think we are simply a social work organization. That is not what we are. We are the mystical body of Christ, who was and who is and who is to come. So long as we are a Church on the way, moving towards Christ, allowing him to transform our being in the Eucharist we will remain the Church that is.
No proof of our “relevance” will suffice for anyone (especially me, I just don’t care to hear about it). The only way for the Church to accomplish her mission is by conversion, allowing ourselves to be had by the one who is Love, to live more fully in the splendor of the Truth, to be made alive by him who has conquered death. The only way is in Jesus the Christ.