But there is One that life and the circumstances of life cannot change, and that is God. God will not turn from His determination to destroy His enemies, nor will He fail to save His Church, here called the sons of Jacob. That God is immutable does not only mean that God does not change, it most emphatically means that he cannot change. We change physically, mentally, and even spiritually. Governments and their leaders change.
Nations come and go.
Creation underwent significant changes at the time of the fall and of the flood, and continues to undergo certain changes. God does not increase or decrease. God is not subject to a process of development or aging. He cannot become more perfect, wiser, or better. If God changed, even in some small way, He would not be and could not be God.