So listening to lots of different and conflicting opinions somehow makes you wise? All you are doing is setting yourself up as the ultimate judge who somehow can sort it all out. Good luck with that. You would already have to have wisdom to do that.
A man with the gift of Pastor-Teacher, who has gone through extensive training in many areas, and has reached a level of spiritual maturity himself, can advance his congregation in spiritual truth. His teaching will be consistent, systematic, and non-contradictory. Do I believe any particular pastor is always right? No or course not. But the Holy Spirit takes all that is correct into the soul of the believer and disregards the error. Obviously, the hearers as I stated earlier have to respect him, and accept his authority, and be faithful hearers. I am not saying there are a lot of terrific pastors out there, there are not. The good ones are few and far between. It is up to individual believers to find someone good to teach them.