| O filho prodigo by Eugénio de Castro - 1910 - 37 pages |
| O Pai-nosso by Leonardo Boff - 1979 - 150 pages |
| Object Talks That Teach the Gospels by Zach Hapeman - 1999 - 48 pages |
| Observations stylistiques sur l'Évangile de S. Jean by André Jean Festugière - 1974 - 147 pages |
| Offene Fragen zur Formgeschichte des Evangeliums by Erhardt Güttgemanns - 1970 - 280 pages |
| Old Testament quotations in the New Testament by Gleason Leonard Archer, Gregory Chirichigno, Evangelical Theological Society - 1983 - 167 pages |
| On character building by John A. Darr - 1992 - 208 pages |
| On earth as it is in heaven by Emily Margolin Gwathmey - 1994 - 96 pages |
| On fire by Greg Laurie - 1993 - 183 pages |
| On Paul and John, some selected theological themes by Thomas Walter Manson - 1963 - 168 pages |
| On reincarnation by Marilyn Grace Graham - 1998 - 293 pages |
| On the Apocalypse by Geoffrey of Auxerre, Joseph Gibbons - 2000 - 230 pages |
| On the Independence of Matthew and Mark by John M. Rist - 2005 - 144 pages |
| On the Independence of Matthew and Mark by John M. Rist - 1978 - 160 pages |
| On the New Testament by Mark Driscoll - 2008 - 86 pages |
| On the New Testament by Mark Driscoll - 2008 - 86 pages |
| On the Road with Jesus by Dr Ben Witherington, III - 2012 - 144 pages |
| On the Road with Jesus by Dr Ben Witherington, III - 2010 |
| On the Writing of New Testament Commentaries by Stanley E. Porter, Eckhard J. Schnabel - 2012 - 532 pages |
| On Wealth & Poverty by Saint John Chrysostom - 1984 - 140 pages |
| One Day by Margo Victor - 2007 - 68 pages |
| One New Man by Jarvis J. Williams, Thomas R. Schreiner - 2010 - 183 pages |
| One Upon the Throne and the Lamb by Russell S. Morton - 2007 - 241 pages |
| Onesimus Our Brother - 2012 - 176 pages |
| Opening the Gospel of John by Philip Wesley Comfort, Wendell C. Hawley - 2002 - 300 pages |
| Opere by Bernardo di Chiaravalle (san) - 2008 - 648 pages |
| Opere by Gregorio Magno (san) - 2007 - 288 pages |
| Opere by Bernardus (Claraevallensis), Ferruccio Gastaldelli - 2006 - 527 pages |
| Oral Tradition and the Gospels by Barry Henaut - 1993 - 335 pages |
| Orientierung an Jesus by Josef Schmid, Wilhelm Pesch - 1973 - 430 pages |
| Orthodox and heretical perfectionism in the Johannine community as evident in the first epistle of John by John Bogart - 1977 - 190 pages |
| Our Final Destiny by Eleanor Stockert - 2005 - 108 pages |
| Our Hope in Christ by NavPress, The Navigators - 2006 - 96 pages |
| Our Lord Prays for His Own by Marcus Rainsford - 1985 - 480 pages |
| Our Lord Prays for His Own by Marcus Rainsford - 1978 - 476 pages |
| Our own worst enemy by William J. Lederer - 1968 - 287 pages |
| Our Savior by Dora Butler Simpkins - 2008 - 116 pages |
| Outline of New Testament Survey by Walter M. Dunnett - 1960 - 176 pages |
| Overcoming the Enemy by T. D. Jakes - 2003 - 124 pages |
| Overhearing the Gospel by Fred B. Craddock - 2002 - 146 pages |