“The worst thing is not being wrong, but being sure one is not wrong.”

“The worst thing is not being wrong, but being sure one is not wrong.” ~ Paul Tournier

"...knowledge puffs up while love builds up." 

~ 1 Corinthians 8:1

If you ever come across a teacher who thinks that he has all or most of the right answers -- about God, Church, Bible, Creation, etc. -- do proceed with extreme caution! There is nothing more dangerous than a proud religious leader who believes his or her interpretation of Scripture is the only correct one. I have seen so much damage done to fragile faith and young believers when those with charisma and influence do not take the humble road and question their own opinions and interpretations.
I knew a teacher in a church one time who was so sure of his own reading of Scripture that he carried a condescending tone with anyone who disagreed with him. I asked him one time how sure he was of himself and he replied, "I am 98% sure of my conclusions. But it might as well be 100%." I'll call this interpretive pride. It's the pride that one's own interpretation of scripture, books, research, etc. should not be questioned, because the interpreter has already risen above all others in their process of discovery and of interpretation. All that remains is for those who are "below" the prideful interpreter to concede his or her knowledge and cease any personal exploration. The result of this spiritually crushing haughty attitude is this:

1. Interpretive pride causes a widening gap between clergy and laity. In many cases the prideful interpreter may not even believe in a clergy-laity distinction. Never-the-less the mere attitude inevitably creates the distinction and the subsequent growing gap because the feeling most followers are left with is we must access God in some way or another through this "smart" man.
2.  

We are to remain true to the teachings of Christ, first and foremost.