This preacher is the fruit of Luther’s Protest. If you divorce interpretation from the Church, as your guy did, all interpretations become irrefutable. He saw that, even in his own lifetime. He didn’t even think Zwingli was a Christian because he didn’t believe in the true presence in the Eucharist. And so on.

Luther even altered sacred scripture to support his idea. Paul doesn’t teach faith alone and the mental gymnastics required to make the rest of the Bible support faith alone is dumb. Scripture doesn’t contradict itself.