The change which our Lord here declares needful to salvation is evidently no slight or superficial one. It is not merely reformation, or amendment, or moral change, or outward alteration of life.
It is a thorough change of heart, will, and character. It is a resurrection. It is a new creation. It is a passing from death to life. It is the implanting in our dead hearts of a new principle from above. It is the calling into existence of a new creature, with a new nature, new habits of life, new tastes, new desires, new appetites, new judgments, new opinions, new hopes, and new fears. All this, and nothing less than this is implied, when our Lord declares that we all need a “new birth.”
It is a thorough change of heart, will, and character. It is a resurrection. It is a new creation. It is a passing from death to life. It is the implanting in our dead hearts of a new principle from above. It is the calling into existence of a new creature, with a new nature, new habits of life, new tastes, new desires, new appetites, new judgments, new opinions, new hopes, and new fears. All this, and nothing less than this is implied, when our Lord declares that we all need a “new birth.”
~ J.C. Ryle
Expository Thoughts on the Gospels: John, volume 1, [Carlisle, PA: Banner of Truth, 1987], 122.