Paul preached not only with words but with power (so did Jesus). In fact that's how he judged the mesage of others; by the power. When Paul preached the gospel, he could see people had faith for healing. They sure don't preach like that at many churches today. Maybe that is the narrow gate that so few people find: the gate that leads to life (note: not eternal life, but life). Jesus promised us a life more abundant, maybe we don't get that because we don't really believe it--by grace, through faith. So many of us today have a form of godliness but deny it's power. That's a scary thought. Are we trusting more in our own theology and doctrines than we are in Jesus? Do we make idols of our doctrine--our knowledge?
Jesus even said if he doesn't do the signs and wonders, then not to believe Him. Signs and wonders confirm the gospel, and we will know they are the sent ones by the sings and wonders that they do in Christ's name.
I don't think any of us (or them) have perfect revelation, but I think there is a lot of truth out there that we still need to find. God has hid them not from us but for us. May we never stop searching for the truth. The bigest obstical to finding the truth is to think we already know it, cuz we stop looking. However, we should never condemn anyone for their beliefs. Jesus never did he met all of them where their faith is. He said feed my lambs (babies) and He said feed my sheep (mature). Are we being fed, and are we feeding the way Paul did? I haven't seen much of it
Just a thought