The Protestant error is shared by very many and openly; it is not a matter of extending charity to a single person, and correcting him privately, but through him to the entire Evangelical Protestant ecumen that needs to hear the Gospel in full. “Preach ye upon the housetops” (Mt 10:27)
It’s a shame that you can’t see what you’re saying...What the heck is the Protestant error? You call what the ‘historical church did to this point evangelism..NOT