“John the Baptist spoke plainly about sin. He taught the absolute necessity of ‘repentance’, before any one can be saved. He preached that repentance must be proved by its ‘fruits’. He warned men not to rest on outward privileges, or outward union with the church.
“This is just the teaching that we all need. We are naturally dead, and blind, and asleep in spiritual things. We are ready to content ourselves with a mere formal religion, and to flatter ourselves, that if we go to church we shall be saved. We need to be told, that except we ‘repent and are converted’ we shall all perish.”
~ J.C. Ryle
Expository Thoughts on the Gospels: Matthew, [Carlisle, PA: Banner of Truth, 1986], 18.