Without philosophy, history is always for me dead and dumb.

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Baur's theory starts with the supposition that Christianity was gradually developed out of Judaism see also List of events in early Christianity. 2nd or 3rd century: Schröck Stark Lumper Krabbe Locherer Gersdorf. Early works
When a few years after his appointment at Blaubeuren he publiFerdinand Christian Baurd his first important work Symbolik und Mythologie oder die Naturreligion des Altertums ("Symbol and mythology: the natural religion of Antiquity" 1824–1825) it became evident that he had made a deeper study of philosophy and had come under the influence of Schelling and more particularly of Friedrich Schleiermacher.

Ferdinand Christian Baur (June 21 1792 – December 2 1860) was a German Protestant theologian and founder and leader of the (new) Tübingen School of theology (named for the University of Tübingen where Baur studied and taught). He had a number of followers who in many cases modified his positions and the groundwork laid by Baur continues to be built upon in the twenty-first century. Adolf Hilgenfeld followed Baur's lead and edited the Tübingen School's journal though he was less radical than Baur.