Does Genesis 1:7 say that there is water above the expanse(sky)? Does the Bible support this wrong cosmology?
Genesis chapter one is not a scientific treatise and should not be treated this way. It is a theological treatise, stating that God created everything in the universe, giving a rough order in which the events happened. Genesis 1:7 makes a statement that could, conceivably, have more than one interpretation. Here is how I understand it. God put water in the sea and water in the sky. As we know, the water in the sky periodically falls to the earth in the form of rain. The writer of Genesis was aware that clouds contain water and that they occasionally drop this water. I do not see some sort of watery “firmament” like some young earth creationists see in this passage.