When the predominance of churches/denominations do not suffer, the absence of the Holy Spirit within them is obvious.
The lack of suffering is a witness to “lukewarm”.
I think we have missed the joy associated with suffering, running from it as if from an enemy: "The apostles left the Sanhedrin, rejoicing because they had been counted worthy of suffering disgrace for the Name."
Paul was very loving, yet he could have been very bitter because he suffered much more than most. He spoke to faulty churches with confidence that they were "beloved", "saints", "redeemed", etc.
Why? How? Because "it is by grace you have been saved..." A pastor friend of mine died recently. He asked for support ONCE a year, from those "God gives us". He used to say, concerning his mission work, "I'll do the work and we'll all split the rewards" (in Heaven).
Jesus ministered to me through that brother!