Introduction: Why Defining God Matters
Every worldview begins with a basic assumption about God—whether He exists, what He is like, and how He relates to us. To misunderstand God is to distort everything else: truth, morality, meaning, and salvation. This post presents a comprehensive yet accessible overview of the one true God as revealed in Scripture and as necessary for rational and moral thought. It blends biblical theology, classical theism, and presuppositional philosophy to show why only the God of the Bible can be God at all.
I. The Nature of God
Simplicity (Not Absolute Divine Simplicity)
God is not made up of parts or composed of attributes that exist outside Himself. His essence is identical to His attributes. God is love, justice, holiness, truth—not merely in possession of them, but in perfect unity. To understand more about this, check out this post.
Trinity
The one true God eternally exists in three persons: the Father, the Son, and the Holy Spirit. These persons are distinct yet share the same divine essence. The Trinity is not a contradiction but the only solution to unity and diversity in both God and creation.
Immutability
God does not change. His nature, character, and purposes remain constant. He is the same yesterday, today, and forever (Mal. 3:6; Heb. 13:8).
Self-Existence (Aseity)
God is the only necessary being. He depends on nothing outside Himself. All other things are contingent and exist only because He wills them to.
II. The Attributes of God
Incommunicable Attributes (belong to God alone):
- Eternality – God has no beginning or end.
- Omnipotence – God possesses all power.
- Omniscience – God knows all things, actual and possible.
- Omnipresence – God is present everywhere, fully and simultaneously.
- Sovereignty – God ordains and governs all things according to His perfect will.
- Transcendence – God exists beyond the created order.
Communicable Attributes (reflected in humans to a finite degree):
- Holiness – God is morally pure and set apart.
- Justice – God always does what is right and good.
- Love – God wills the good of others and acts to bless them.
- Grace – God shows undeserved favor.
- Faithfulness – God always keeps His promises.
- Truth – God is the source and standard of all truth.
III. The Works of God
Creator
God created the universe ex nihilo (out of nothing), establishing order, purpose, and life by His word (Gen. 1:1; Col. 1:16).
Sustainer
God upholds the universe and governs its operations moment by moment (Heb. 1:3; Acts 17:28).
Judge
God will judge all people in perfect righteousness, rewarding good and punishing evil (Rom. 2:5–11).
Redeemer
God has acted in history to save sinners through the death and resurrection of Jesus Christ. Redemption flows from His love, justice, and mercy (Rom. 3:24–26).
IV. God’s Relationship to the World
Transcendence and Immanence
God is wholly other than creation (transcendent), yet He is actively involved in sustaining and governing it (immanent).
Eternity and Time
God exists outside time but interacts within it. He is not subject to temporal change, yet His actions in time are real and meaningful.
Creator-Creature Distinction
God is fundamentally different from everything He made. He is infinite, uncaused, and absolute; creation is finite, dependent, and contingent.
V. God and Human Knowledge
Knowability and Incomprehensibility
We can truly know God because He has revealed Himself, but we can never know Him exhaustively. His infinite being cannot be fully grasped by finite minds.
Analogical Knowledge
Our knowledge of God is neither identical to His self-knowledge nor entirely different; it is analogical—true, but proportionate to our creaturely capacity.
Necessity of Revelation
We know God only because He has chosen to make Himself known through creation, conscience, Scripture, and ultimately through His Son.
VI. God as the Foundation for Truth and Morality
God is the necessary precondition for all intelligibility:
- Logic flows from His unchanging nature.
- Morality flows from His holy character.
- Meaning and purpose are grounded in His eternal will.
Without God, there is no absolute standard for truth or ethics. Attempts to build knowledge or morality apart from Him result in relativism or contradiction.
VII. Philosophical and Theological Clarifications
1. Simplicity and Trinity
Simplicity does not contradict the Trinity. The three persons of the Godhead are not parts of God but fully possess the undivided divine essence. For more on this, check out our trinity series.
2. Essence and Energies
God’s essence is one, yet we know Him by His works (“energies”) in creation and redemption. This distinction does not divide God but reflects the difference between who He is in Himself and how He reveals Himself.
3. Transcendence and Immanence
God is both beyond and within creation. This balance is essential to a biblical understanding of His presence and action.
4. Sovereignty and Responsibility
God is sovereign over all things, yet human beings are morally responsible. Scripture affirms both realities without contradiction.
5. Problem of Evil
God permits evil for a greater purpose without being its author. His justice and goodness ensure that evil will be judged and ultimately used to glorify Him (Rom. 8:28; Gen. 50:20).
6. Creator-Creature Knowledge Gap
We must avoid thinking of God in purely human categories. All theology must account for the qualitative difference between the infinite and the finite.
Conclusion: The Uniqueness and Sufficiency of God
The God revealed in Scripture is not merely one option among many. He is the only possible foundation for a coherent worldview, moral order, and hope of salvation. He is perfect in being, boundless in power, righteous in judgment, rich in mercy, and worthy of all worship.
To know God rightly is the beginning of wisdom, the foundation of truth, and the center of eternal life (John 17:3).