Most historians agree that Jesus or his followers established a new Jewish sect, one that attracted both Jewish and gentile converts. Out of this Jewish sect developed Early Christianity, which was very diverse, with proto-orthodoxy and "heretical" views like gnosticism alongside each other, According to New Testament scholar Bart D. Ehrman, a number of early Christianities existed in the first century CE, from which developed various Christian traditions and denominations, including proto-orthodoxy. According to theologian James D. G. Dunn, four types of early Christianity can be discerned: Jewish Christianity, Hellenistic Christianity, Apocalyptic Christianity, and early Catholicism.