Rick Warren, Leonard Sweet, Dan Kimball, Brennan Manning, Tony Compolo and Brian McLaren to name a few: these men are not serving God. There are other leaders who although sound and correct in their doctrine tolerate these men by fellowshiping with them, promoting them and by not exposing them. A true Shepherd will not tolerate such apostasy in the sheepfold.
Rom 16:17-18, "Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them. For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple."
The word "divisions" used here means standing, uprising, or controversy. In other words men, preachers, leaders who stand or cause a revolutionary uprising which is not in line with the written Gospel. Such men who take an unbiblical position are to be 1) "marked" - keep your eye on; consider; watch. 2) "avoid" - to vere a course right around them; shun them; do detours around them.