If we would hold fast that which is good, we must never tolerate or support any doctrine which is not the pure doctrine of Christ’s Gospel. There is a hatred which is downright charity – that is the hatred of erroneous doctrine. There is an intolerance which is downright praiseworthy – that is the intolerance of false teaching in the pulpit. Who would ever think of tolerating a little poison given to them day by day? If men come among you who do not preach “all the counsel of God,” who do not preach of Christ, sin, holiness, of ruin, redemption, and regeneration, and do not preach of these things in a Scriptural way, you ought to cease to hear them.
~ J.C. Ryle