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None, none can tell, but those happy souls who have experienced [being born again in Christ] with what demonstration of the Spirit this conviction comes. … Oh, how amiable, as well as all sufficient, does the blessed Jesus now appear! With what new eyes does the soul now see the Lord its righteousness! Brethren, it is unutterable…
– George Whitefield, evangelist in The Great Awakening, 1730s and 1740s