Joseph's brothers did not fear the Lord, and, although it was obvious that the ruler of Egypt knew about the wrong they had done, they did not even suspect that he was their brother Joseph. What's the connection?
Psalm 111:10 tells us that "The fear of the LORD is the beginning of wisdom."
Proverbs 1:7 tells us that "The fear of the LORD is the beginning of knowledge."
Christians who harm other Christians lack both wisdom and knowledge. They are not the type of Christian that we should be following or even listening to.