The words of Jesus are authoritative and final. Be not ye called Rabbi. Here the Lord laid down the principle that condemns the wearing of ALL religious titles whether they be Reverend, Rabbi, Master, Father, Pope, Cardinal, Archbiship, Pastor, etc. All that men need to believe, be, know, do or teach to please God is written in the Bible. In this way the church is strengthened and its influence for good is extended.
Preachers carry a heavy burden in a sin-sick world.
They are not ashamed of centuries old fundamentalism. They do not neglect duty while sinners perish in darkness. They are careful to distinguish between matters of faith and matters of opinion , then deal with each for what it is. A man who will not preach the gospel fully should not preach at all. Most of his sermons caused a revival or a riot.