The story about God creating the world and humankind and the loss of paradise (Gen 1-3) is transmitted as the beginning of the Bible and of fundamental importance for understanding the world and humanity in Judaism and Christianity. The text and the conception of ontological truth it evokes, have shaped Judeo-Christian thinking since antiquity: Everything is what it is, because God made reality as narrated. More precisely, Gen 1-3 in the interpretive translation into Greek, is the foundational text for early Christianity. In reception of it, early Christian theology continued the "work on the beginning", convinced that God had set a new beginning in Christ. The TP examines this early Christian reception of Gen 1-3LXX as an aitiology in the following respects: it is necessary to reconstruct Gen 1-3LXX as the source text (joint research basis), and to analyze its reception in early Christianity with focus on the Christological re-reading of the creation narrative (focus area I) and on its inclusion in the early Christian discourse on gender. This discourse, when read in the light of modern gender theories, reveals the performative power of aitiological discourses (focus area II). In this way, the discursive potential of the initial text and its receptions become visible by the interweaving of past and present in its relevance for the future. On the one hand, the variety of receptions reveals the ambiguities and contradictions in the text of Gen 1-3LXX itself, on the other hand, the pragmatics of these receptions and its power that shape epistemic communities and their conception of reality comes to the fore.