The genealogy of Jesus as recorded in the gospels of Matthew and Luke differs. From the very first centuries of Christianity, this difference gave rise to many questions and various attempts at reconciliation. The better known attempt is that of Julius Africanus in his letter to Aristides. Having reconstructed the text on renewed bases, the study by Christophe Guignard not only offers an edition integrating a new fragment and the first complete modern translation of this important work, but also sheds new light on the early controversies around the genealogy of Jesus.