So, once again, your church, made up of human beings, can confer powers that even the Holy Spirit cannot?
I don’t accept your premise, which is that the Church is not divinely established. To us, the Church is the body of Christ. We are his hands and feet, all of us. A more or less ignored part of the mass is the calling down of the Holy Spirit. This is briefly stated in the Latin mass, but goes out at great length in the eastern liturgies. The analogy is the Holy Spirit decending on Mary. The Holy Spirit, we believe, is already with the Church and the priest—the man— is the instrument by which Jesus appears to us but still behind the veil. If we are worthy, we can go behind that veil and see him with oiur hearts.