We may think God is infinite, all-powerful, all-knowing, etc. but that may just be because we don't understand Him very well.
Maybe I'm having this thought today because this afternoon we found out that my father's defibrillator really does work when it shocked him during dinner -- he's been having blood clot problems, likely related to his congestive heart failure.
When you're a kid, your Dad seems big enough and strong enough to handle anything and fix anything. Now when you talk to him at 6 p.m. he can't remember that he talked to you at 1 p.m. as well.
Let me make my point clear. It's not that I think God is changing -- it's that I think we may not understand things very well -- seeing things through a glass, darkly.