I believe that the Spirit of God worked with human prophets, but these prophets were still people. They had views like those in their time and place. They viewed God and the cosmos the way we would expect, and until they had further revelation to clarify these views, they worked with the light they had.
There is no evidence that the prophetic biblical authors spoke or wrote differently from us. God didn’t turn these inspired human authors into sock puppets to produce God’s words or into secretaries that took word for word dictation. In the words of Peter Enns, “The Bible, at every turn, shows how ‘connected’ it is to its own world is a necessary consequence of God incarnating himself. When God reveals himself, he always does so to people, which means that he must speak and act in ways that they will understand….It is essential to the very nature of revelation that the Bible is not unique to its environment. The human dimension of Scripture is essential to its being Scripture.” 1
- Peter Enns, Inspiration and Incarnation: Evangelicals and the problem of the Old Testament, Baker Academic, 2005, p. 20-21.
Second and Third Isaiah