If God is not unchanging, then the whole basis of our faith begins to fall apart, and our understanding of the universe begins to unravel. This is because our faith and hope and knowledge all ultimately depend on a person who is infinitely worthy of trust - because he is absolutely and eternally unchanging in his being, perfections, purposes, and promises.
Wayne GrudemGod does not need us or the rest of creation for anything, yet we and the rest of creation can glorify him and bring him joy.
Wayne GrudemIn one sense the doctrine of the trinity is a mystery that we will never understand fully.
Wayne GrudemThe clarity of Scripture means that the Bible is written in such a way that its teachings are able to be understood by all who will read it seeking God's help and being willing to follow it.
Wayne Grudem