John 9:34 "You were born in sin!" they exclaimed. "Are you trying to teach us?" And they threw him out of the synagogue.
It is easy to hide behind what we think we know. Sometimes our knowledge becomes our enemy. It can blind us and deceive us into thinking we know it all. Sometimes we rely on what we know instead of Who we know. We shut the door to the possibility that we can learn anything new. The longer we are in the faith, the more tendency we have to quit learning. We may even rebel at the thought that we might need to learn something new, or even change the way we have been thinking about things. Satan will sometimes convince us that we have perfect knowledge and that everyone else needs to conform to our way of thinking. It is true of us, and it is true of many churches.
Pastors, teachers, and church leaders are especially prone to rest in what they know and shut the door to the possibility of their thinking being wrong. Think about it. When was the last time you heard from the pulpit a preacher admitting that in his study of God's Word he discovered that he was wrong in his understanding? Have you heard anyone lately proclaim something new they had discovered? How long has it been since you gained new insight and understanding of God's Word? Shouldn't we be open to new understanding so that we can grow in grace and truth?
Don't become proud and arrogant over what you may know to be true. Meditate upon God's Word with an open heart and mind. Let the Spirit of God guide you into all truth. If you do, He will.