This short post here at Apprising Ministries is to draw to your attention to the fact that Martin Luther himself considered Roman Catholicism apostate.

And to say it that way is being kind. Here is what Luther said:

Since the papal church not only neglects the command of Christ but even compels the people to ignore it and to act against it, it is certain that it is not Christ’s church but the synagogue of Satan which prescribes sin and prohibits righteousness. It clearly and indisputably follows that it must be the abomination of Antichrist and the furious harlot of the devil. (What Luther Says, II: 1019)

What kind of a church is the pope’s church? It is an uncertain, vacillating and tottering church. Indeed, it is a deceitful, lying church, doubting and unbelieving, without God’s Word. For the pope with his wrong keys teaches his church to doubt and to be uncertain. If it is a vacillating church, then it is not the church of faith, for the latter is founded upon a rock, and the gates of hell cannot prevail against it (Matt.16:18). If it is not the church of faith, then it is not the Christian church, but it must be an unchristian, anti-Christian, and faithless church which destroys and ruins the real, holy, Christian church. (Luther’s Works, vol. 40, Church and Ministry II, The Keys, p.348)

Read more of what Luther had to say here at A Christian Witness To Roman Catholics.