Often times... makes them very religious and locks them into limited commentaries from another day, creeds and traditions. Unable to think in the here and now by doctrinally finding new solutions as needed with God's Word in the filling of the Spirit.
Luther in his day was breaking away from religion... And, over time, even that has become too much like another religion to replace the last because solutions through further growth have ceased. Resting on the successes of the past.
But the hour is coming, and now is, when the true worshipers will worship
the Father in Spirit and truth; for the Father is seeking such to worship Him.
God is Spirit, and those who worship Him must worship in spirit and truth.” John 4:23-24
To do that? That requires a constant learning of sound doctrine and having the Spirit transforming the mind to think on one's feet to remain free from the wold's power to appeal to the pride and peer pressure from men .... Even proud religious men, who see themselves as being the very thing what Jesus seeks.
Yes I have seen what pride does to some people.
grace and peace ..........