Bodily resurrected, yes, but those who have fallen asleep in Him are currently alive in Heaven!
the "church" is the "assembly of called out ones," the members: and they can and do "err." Even Popes "err." History is the evidence here. Your explanation that since the church is the body of Christ, and Christ is the truth, it will never "err," is a straw man waiting to be knocked down :-)
I don't claim that men cannot err or be sinners or fail in their attempts to imitate Christ. But, the Church was built on the Rock, and both the Keys and the Holy Spirit were given to it and, as an authority, is protected from declaring false dogma. I'm going to guess you try and claim that the "rock" of the Church is really St. Peter's declaration, not him - am I right?
Most assuredly NOT! And the consent of the great majority of the church fathers agree with my understanding and exegesis of Mt. 16:18. These say that the "rock" is not Peter, nor his declaration, but the person of Jesus Christ. If you care to argue this, remember that the Papacy claim their "interpretation" is the "unanimous consent of the church fathers," which is demonstratably wrong. Thusly, your explanation above is wrong, which one could make the judgment that the Papacy's teaching here is false dogma!