With unspeakable pleasure have I heard that there seems to be a general concern amongst you about the Things of God. . . . What great things may we now expect to see in New England, since it has pleased God to work so remarkably among the Sons of the Prophets? Now we may expect a reformation indeed, since it is beginning at the house of God. A dead Ministry will always make a dead People. Whereas if ministers are warmed with the love of God themselves, they cannot but be instruments of diffusing that love amongst others. This, this is the best preparation for the work whereunto you are to be called. Learning without piety will only render you more capable of promoting the kingdom of the devil. Henceforward therefore I hope you will enter into your studies, not to get a parish, not to be a polite preacher, but to be a great saint. . . . The more holy you are, the more will God delight to honor you. He loves to make use of instruments like himself. . . .”
George Whitefield, writing to students at Harvard and Yale preparing for the ministry, 25 July 1741, quoted in Richard L. Bushman, editor, The Great Awakening: Documents on the Revival of Religion, 1740-1745 (New York, 1970), page 38.
(HT: Ray Ortlund)