Creation in collision?: Isaiah 40-48 and Zoroastrianism, Babylonian Religion and Genesis 1

Isaiah 40‒48 emphasizes that Yahweh is a unique creator-god. Did the author(s) arrive at this idea by adopting, adapting or refuting other texts and traditions, and, if so, which? To this long-standing, unresolved scholarly riddle, this article offers fresh arguments, discussing probable and improbable relations between Isaiah 40‒48 and Zoroastrianism, Babylonian religion and the creation account in Genesis 1.