Jacob | John Jacob Astor | Jacob M. Appel | Jacob Epstein | Jacob Zuma | Jacob Obrecht | Jacob Lawrence | Jacob Appel | John Jacob Astor IV | Irène Jacob | Jacob Jordaens | Paul Jacob | Meshullam ben Jacob | Jacob Riis | Jacob Grimm | Jacob Christian Schäffer | Jacob Appelbaum | Jacob Truedson Demitz | Jacob ter Veldhuis | Jacob's Ladder | Jacob's biscuits | Jacob's Award | Jacob Rothschild | Jacob L. Devers | Jacob Latimore | Jacob Kirkegaard | Jacob Kielland | Jacob J. Shubert | Jacob Hackenburg Griffiths-Randolph | Jacob Bronowski |
Others considered as part of the Lord’s recovery are Johann Arndt, Theodore Austin-Sparks, Margaret E. Barber, Bernard of Clairvaux, Jacob Boehme, Peter Böhler, John Bunyan, Brother Lawrence (Nicholas Herman), Jan Hus, George Henry Lang, William Law, Dwight Lyman Moody, Charles Haddon Spurgeon, William Tyndale, John Wycliffe, Aiden Wilson Tozer,and many others.
He is best known for his multi-volume gnosticism series, including Gnostic Return in Modernity and Gnostic Apocalypse: Jacob Boehme's Haunted Narrative. Rehabilitating a project attempted in the nineteenth century by a leader of the Tübingen school of theology, Ferdinand Christian Baur, O'Regan attempts to identify a gnostic structure or "grammar" that can be traced through sources and authors as diverse as Valentinianism and William Blake.