and yet our ideas of ourselves change, greatly. so does God if you believe the NT and OT are a saga,
though the more likely reason we have ideas similar to this Gods is that we thought him up. not the other way around. it would explain his personality and Human nature despite being stated to be omniscient
God did not change. The things God does over time have been different according to the stage of the plan he declared from the beginning.
The old covenant prepared a people for the new covenant -and the new covenant prepares people to be godlike, and also to be the government under Christ of the Earth of the future and beyond.
Once a foundation is finished, you move on, but the foundation must be finished first. Without the old covenant, the new covenant could not accomplish what it will.
God is omniscient and all of that -but we are not.
God created "evil" by creating ignorant and inexperienced beings with independent will and creativity -who then needed to become knowledgeable and experienced in reality.
He did not do evil by allowing us to do evil.
He has, however,
purposed evil so that we may master good ourselves.
Our thoughts and perceptions about ourselves and God may change, but the truth about ourselves and God does not change. Our perceptions will be replaced by the truth which will come to pass.
The truth is enormous -so it takes time to understand.