Organic Inspiration

God can speak directly from a mountain. We see that in Scripture. But the Holy Spirit also can inspire our human faculties. And even when the Holy Spirit was speaking directly to the prophets, sometimes the style would come out differently from one prophet to another. God even has a special nickname for Ezekiel, "Son of man," for example. So, it didn't mean that the style couldn't include the style of the author, that God didn't work through the human faculties, but it was still God's product when it came out. God insured that his message was preserved carefully through these human authors.