***When I explain the error of Protestantism to a Protestant I would do it from scripture only, since that is the only way to have a productive discussion with a Protestant.***
Imagine that: the word of God being the final arbiter between men. Sadly, it is a concept that the church in Rome has yet to learn, even if her members pretend Sola Scriptura for the sake of discussions with Protestants.
Consider for example, the head article.
But when somebody says they believe in Jesus and He is their Savior, but somehow works are mingled in with the picture, then I can't really say to you how much faith that person is putting in Jesus and how much faith that person is putting in their own efforts to satisfy God.
What does this juvenile psychoanalysis have to do with scripture? Answer: nothing. Somebody sucked on his finger and decided that by doing works Christ commanded we have less faith. Huh? This kind of counterscriptural nonsense is the entirety of Protestantism. It is laughable.