impossible for God
False.
I don’t believe in god, but if it’s real, there’s nothing that’s impossible for it.
Depends on the god. The God of the Old Testament wasn’t really portrayed as omnipotent or omnipresent all the time. Granted, that’s because many different people wrote the books of the Bible. The gods of a lot of other ancient religions weren’t written as all-powerful or even necessarily immortal. The Greek gods are a great example of that.