My doctoral work is about how Isaiah 65-66, as a prophetical post-exilic text in the Hebrew Bible, is a shift from the classical prophecy to apocalyptic thinking. I aim to show that Isaiah 65-66 differs from the typical prophetic genre in the Hebrew Bible and that its topics have left its mark in 1 Enoch, which is a Jewish-apocalyptic text from second century BCE. This being the case, the central task is the thematic relationship between the post-exilic prophetic genre in Isa. 65–66 and the early apocalyptic genre in 1 Enoch.