God eternally exists as three persons, Father, Son and Holy Spirit, and each person is fully God, and there is one God.
Wayne GrudemIf 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's faithfulness means that God will always do what He said and fulfill what He has promised.
Wayne GrudemIt is scripture alone, not conservative Evangelical tradition or any other human authority, that must function as the normative authority for the definition of what we should believe. The authority of the scripture means that all the words in scripture are God's words in such a way that to disbelieve or disobey any word of scripture is to disbelieve or disobey God.
Wayne GrudemIt is not just that we exist and God has always existed, it is also that God necessarily exists in an infinitely better, stronger, more excellent way. The difference between God's being and ours is more than the difference between the sun and a candle, more than the difference between the ocean and a raindrop... God's being is qualitatively different.
Wayne Grudem