The Bible tells us that there are many aspects of God that are unchangeable. In particular, he’s unchangeable in his being, his attributes, his purposes, and his promises. In each of those areas, God is unique in this regard. As humans, our being or nature changes. For example, someday we will exchange our current bodies with new and glorified bodies. Our attributes change. Even the things that we intend to do and the promises we make can change. But in each of those areas, God doesn’t change. His nature and attributes are always and forever the same. Everything he intends to do will be done. Every promise will be kept. And that's good news because we know we can count on him and trust him in all that he has said.