Daniel Webster Whittle (1840 - 1901) was a Major in the Northern Army during the Civil War. Following "The War Between the States", Whittle entered the full-time ministry through the influence of Dwight Moody. He was an evangelist who traveled with the famous hymn writer and gospel singer P.P. Bliss and later James McGranahan. He wrote (mostly under pseudonym, El Nathan) the words for about two hundred hymns, including "Moment by Moment," "I Know Whom I Have Believed," and "Banner of the Cross."