In this significant book written by a venerated professor and popular Bible conference speaker, Dr. Pentecost observes that "while there is much discussion about fellowship, little is understood of the bases, prerequisites, fruits, and the responsibilities of fellowship. John develops these truths in his first epistle." Written as a verse-by-verse exposition, Dr. Pentecost's celebrated scholarship and compelling writing is filled with rich Old Testament background and parallels drawn from other books in the New Testament.