Well, it applies to both earthly and spiritual affairs, and in order to refute the fallacious presumed power then it is necessary to contrast it with what is Scriptural, and indeed it is a contrast.
For besides presuming perpetual assured infallibility, rather than being instruments to the Holy Spirit executing actions thru obedient servants, based upon autocratic Romish claims, some RCs imagine God awaits orders from "priests" to which He is bound to obey.
With regard to the mystic body of Christ, that is, all the faithful, the priest has the power of the keys, or the power of delivering sinners from hell, of making them worthy of paradise, and of changing them from the slaves of Satan into the children of God. And God himself is obliged to abide by the judgment of his priests, and either not to pardon or to pardon..The sentence of the priest precedes, and God subscribes to it. .” – Dignity and Duties of the Priest, St. Alphonsus Ligouri, Vol. 12, p. 2 (whose writings were declared free from anything meriting censure by Pope Gregory XVL (1839) in the bull of his canonization). http://www.archive.org/stream/alphonsusworks12liguuoft/alphonsusworks12liguuoft_djvu.txt
The supreme power of the priestly office is the power of consecrating...Indeed, it is equal to that of Jesus Christ...When the priest pronounces the tremendous words of consecration, he reaches up into the heavens, brings Christ down from His throne, and places Him upon our altar to be offered up again as the Victim for the sins of man...Indeed it is greater even than the power of the Virgin Mary [who is said to be all but almighty herself]...The priest speaks and lo! Christ, the eternal and omnipotent God, bows his head in humble obedience to the priest's command. - (John A. O'Brien, Ph.D., LL.D., The Faith of Millions, 255-256 , O'Brien. Nihtt obstat: Rev. Lawrence Gollner, Censor Librorum Imprimatur: Leo A. Pursley, Bishop of Fort Wayne,-South Bend, March 16, 1974
Makes Jesus a pawn of “Priests”
Hard camel to swallow...