Then, if that is your opinion, you need to agree that, according to scripture, God is something since creation that He was not before creation - spatial to be everywhere and temporal to operate within time. But are you willing to admit that?
You are claiming that the created cannot comprehend the Creator, and then proceed to make biblically unfounded inferences about the Creator as if you do comprehend Him. Are you uncreated? Scripture identifies space and time as uncaused. Things were made within God's time and space: things like planets and stars, land and sea, angels and man, morning and evening, days, hours, weeks.
The creation of this cosmos did not change God's nature because God is infinite time and infinite space. Prove me wrong from scripture.
that is not what he said. The created cannot comprehend the Creator. Time, space, and matter are relevant at the time they entered or stopped. That did not change the one who created time that can be measured. God is the First Cause uncaused. Your understanding is putting limits on the God of the Bible, who doesn't have any. We have to admit no such thing.
The creation of this cosmos did not change God's nature because God is infinite time and infinite space. Prove me wrong from scripture.