Words of condemnation can wound. Applied with the proper intent and execution, however, they can restore and empower. This goes beyond using kind words and a gentle tone. If we are to build up, we have to understand the foundation of a person’s belief. We have to be in relationship with the person we are talking to.
When it comes to any search for truth, the most important thing is to know the Lord. The Spirit of God disciples the hearts of those who seek Him. I’m not saying we should never discuss specific topics or read books other than the Bible. But the highest counsel comes from God and His Word. The best way to trust the Lord is to understand His character and trust His teaching.