I find you grow more and more famous in the learned world. As you have made a pretty considerable progress in the mysteries of electricity, I would now humbly recommend to your diligent, unprejudiced pursuit and study, the mystery of the new birth. It is a most important, interesting study and, when mastered, will richly answer and repay you for all your pains. One, at whose bar we are shortly to appear, hath solemnly declared, without it we cannot enter the kingdom of heaven. You will excuse this freedom. I must have something of Christ in all my letters. ~ George Whitefield in a letter to Benjamin Franklin, August 17, 1752