Where compromise is sought – doctrinally

– What are the doctrinal areas where No Christian/pastor should ever compromise?
– Sam Rohrer is asked, in crafting a statement for the American Pastors Network you chose this. “APN is made up of faithful pastors and citizen leaders who are committed to the Truth, who believe in the Authority of Scripture, and who boldly preach the whole counsel of God with a disciplined application of a Biblical World-view.” 1) Committed to truth, (2) Believe in the absolute authority of the Scripture, (3) Boldly preach the whole counsel of God. Why these three things to be the components of APN’s mission statement?
– What is the tragic outcome of theological compromise?