“Mark what I say. If you want to do good in these times, you must throw aside indecision, and take up a distinct, sharply–cut, doctrinal religion. If you believe little, those to whom you try to do good will believe nothing. The victories of Christianity, wherever they have been won, have been won by distinct doctrinal theology; by telling men roundly of Christ’s vicarious death and sacrifice; by showing them Christ’s substitution on the cross, and His precious blood; by teaching them justification by faith, and bidding them believe on a crucified Savior; by preaching ruin by sin, redemption by Christ, regeneration by the Spirit; by lifting up the brazen serpent; by telling them to look and live—to believe, repent, and be converted. This—this is the only teaching which for centuries God had honored with success, and is honoring at the present day both at home and abroad.
It is doctrine—doctrine, clear, ringing doctrine which, like the ram’s horn at Jericho casts down the opposition of the devil and sin. Let us cling to decided doctrinal views, whatever some may please to say in these times, and we shall do well for ourselves, well for others, and well for Christ’s cause in the world.” (emphasis added)
– J C Ryle