That is why protestants take their bibles to church and keep them at hand when hearing a sermon or reading a book.. checking it against a known infallible source
2Pe 2:1 But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction
I never said that St. John of the Cross cleansed anyone from sin.
However you did present his work as truth, that the "dark night of the soul cleanses the soul.. ".. The cleansing of the soul is the work of the cross of Christ ..not our trials
yes, tell that to the suicided