- Quoted in, Ravi Zacharias, Jesus Among Other Gods (Nashville, TN: Word Publishing, 2000), 38.
- Quoted in Bernard Ramm, Protestant Christian Evidences (Chicago: Moody Press, 1957), 163.
- G. K. Chesterton, The Everlasting Man (San Francisco: Ignatius Press, 1993), 204.
- Frank Mead, ed. The Encyclopedia of Religious Quotations (Westwood, IL: Fleming H. Revell Publishers).
- John 8:12; John 14:6; John 11:25