Does it say somewhere in the Bible that these Godly practices will come to an end with the death of the Apostles? I never read that.
And besides, Campion already showed that the Jews were doing the same thing in the OT. So if a prophet of God can do it when Christ was not even walking the earth yet, why can't one do it after He came? Do you have any Scripture to back you up on this claim?
Third, your point about the final covenant doesn't hold water, as Paul was doing it with impunity under the very same new covenant that we are under.
Are there modern day prophets? Who? Have their claims to this title been tested? If they don't pass the test, ought we stone them?
Applying the Old Covenant to the New Covenant era just doesn't wash.
The Apostles (including Paul) were given direct, supernatural revelation and power. Their authority was substantiated by God through miraculous power in the name of Jesus. The Holy Spirit used such people to provide us with the full revelation that He intended us to have.
Any practice, teaching or inference outside of the full revelation of the final covenant given in the New Testament is "another gospel" different than what was given through the Apostles. Conveyors of such messages ought to take heed to the warning given by Paul in Galatians 1:8
But even if we, or an angel from heaven, preach any other gospel to you than what we have preached to you, let him be accursed.
It seems that if Paul includes himself, the other Apostles, and ANYONE ELSE in this curse, it would also include the pope, bishops, priests, ministers, pastors, preachers, deacons, etc.
Given the serious, eternal implications of this passage, isn't it wise for each person to discover for himself what Gospel Paul and the Apostles imparted? Or shall we blindly trust an organization of corruptible men to shepherd our souls? You do what you will; I'll place my hope in the revelation of the Scripture.