This present dissertations aim is to screen the apocryphal Infancy Gospels of Jesus, regarding topoi which were used in ancient biographies to depict the childhood of the portrayed. The object of investigation is primarily literature of the second century A.D., which was pre-eminently compared to the Infancy Gospels of Thomas and James. The prerequisite for this purpose is the investigation of topoi which are constitutive of the literary fiction of infancy. This fiction was deliberately used by the sources, starting at Herodot. The following biographical elements of ancient depictions of infancy could distinctly be substantiated in IGT and Protev: a proleptic childhood description, the extraordinary birthplace, unnatural light phenomena, the presence of a star, the drawing of the child as a puer senex, the depiction of Jesus as an impertinent child, dreams in the context of procreation, the endangerment of the chosen child, the mention of the noble descent, and, naturally, the emphasis of the childs divinity. It could be demonstrated that the apocryphal Infancy Gospels of Jesus do not only feed on the ancient biography, but also on the apocryphal literature of Judaism, which, in turn, embodies a product of the encounter with Hellenism. Further sources are biographical elements in the writings of the Second Sophistic, ancient depictions of the life of holy men, as well as text blocks from the canonical gospels.Furthermore, it was possible to constitute a differentiation between biographies of emperors and philosophers. In this respect, it is remarkable that Protev and IGT show a slight tendency towards the biography of emperors and that wide-ranging parallels between IGT and the ancient mythology can be found.