How did the writings that make up the New Testament - The Gospels, the so-called Praxapostolos (Acts and the canonical letters), the Epistles of Paul, and Revelation - make their way into the collection, and what do we know about their possible historical origins, and in turn the emergence of the New Testament itself? The New Testament as we know it first became recognisable in more detail in Irenaeus of Lyon towards the end of the second century CE. However, questions remain as to and by whom was it redacted. Was it a slow, organic process in which texts written by different authors, members of different communities and in various places, grew together into one book? Or were certain writings compiled on the basis of an editorial decision by an individual or a group of editors, revised for this purpose and partly harmonised with each other? This volume sketches out the complex development of the New Testament, arguing that key second century scholars played an important role in the emergence of the canonical collection and putting forward the possible historical origins of the text’s composition. is of interest to students and scholars working on the New Testament and anyone with an interest in early Christianity more broadly.