Why It Changes Everything
“For as the Father has life in himself, so he has granted the Son also to have life in himself.”
— John 5:26
One of the most awe-inspiring attributes of God—and one of the least understood—is His aseity. The word comes from the Latin a se, meaning “from oneself.” In theological terms, aseity refers to God’s self-existence and self-sufficiency. He is not caused, not dependent, not sustained by anything outside of Himself. God exists because He is—eternally, necessarily, and independently.
This doctrine may sound abstract, but its implications are anything but. Aseity lies at the heart of what makes God God—and why nothing in creation can compare to Him.
God Has Life in Himself
When Jesus says in John 5:26 that the Father “has life in Himself,” He affirms one of the clearest expressions of divine aseity in Scripture. Unlike us—who borrow our breath, depend on food and water, and were brought into existence by others—God’s life is uncaused and unborrowed. He does not have life; He is life.
This is echoed in Exodus 3:14 when God reveals His name to Moses: “I AM WHO I AM.” He is not defined by anything outside Himself. He is not becoming, growing, or evolving. He is. Always.
The early church recognized this clearly. Augustine writes, “God is the supreme being who alone exists in the highest and truest sense of the word.”¹
Created Things Depend. God Does Not.
All things in the universe—galaxies, planets, people—are contingent. They could have not existed. They depend on causes. They change, decay, and fade. But not God.
God is necessary, not contingent. His existence is not optional or dependent. As Thomas Aquinas reasoned in his Summa Theologiae, if everything required a cause, there would be no starting point. Therefore, there must be a being “whose essence is existence,” and this is what we call God.²
This philosophical necessity is also theological truth. The God of Scripture alone is “from everlasting to everlasting” (Psalm 90:2).
Why Aseity Refutes Atheism
Atheism often tries to reduce God to just another being—maybe a bigger or more powerful one, but still something within the system of the universe. But the God of Christianity is not a being among beings. He is Being Itself. As Alvin Plantinga puts it, God is “a self-existent being who explains the existence of everything else but is not himself in need of explanation.”³
Every worldview must answer the question: Why is there something rather than nothing? If you keep tracing causes backward, you either hit a wall or posit something uncaused and eternal. Aseity means that the chain stops at God—because He alone is not caused.
Why Aseity Matters for You
Aseity also means that God doesn’t need you—and that’s good news. His love for you isn’t driven by need or deficiency. He created not out of loneliness but out of overflowing love.
God’s independence also means He is utterly reliable. He is not swayed by emotion, not affected by loss, not dependent on trends or support. “I the Lord do not change” (Malachi 3:6).
The Westminster Confession summarizes this beautifully: “God hath all life, glory, goodness, blessedness, in and of himself… and is alone in and unto himself all-sufficient.”⁴
Aseity and the Trinity
Interestingly, aseity is not only about the Father. In John 5:26, Jesus says the Father has granted the Son to have life “in Himself.” This tells us that the Son’s life is not derived temporally, but eternally. The Son is begotten, not made—and His divine essence is as self-existent as the Father’s.
The Holy Spirit, too, is “eternal” (Hebrews 9:14), proceeding from the Father and the Son. The doctrine of aseity, far from being cold or abstract, draws us into the eternal communion of the Triune God—a communion of shared, uncaused, eternal life.
Worship the Self-Existent One
When you pray, you’re not appealing to a needy deity who craves attention. You’re approaching the One who holds all things together (Colossians 1:17), who needs nothing but gives everything.
God’s aseity should lead us to humility, awe, and gratitude. You exist because He wills it. You are loved not because He must, but because He delights to.
The self-existent God is not remote—He is relational. He is not dependent—yet He invites you to depend on Him.
Endnotes
¹ Augustine, Confessions, trans. Henry Chadwick (Oxford: Oxford University Press, 1991), Book VII.
² Thomas Aquinas, Summa Theologiae, I, q.3, a.4.
³ Alvin Plantinga, God, Freedom, and Evil (Grand Rapids: Eerdmans, 1974), 28.
⁴ The Westminster Confession of Faith (1646), Chapter 2, Article 2.
For Those Who Would Like To Know:
The word aseity comes from the Latin phrase a se, which literally means “from oneself.” It was adopted into theological and philosophical discussions to describe the self-originating, self-existent nature of God.
- A = “from”
- Se = “oneself”
So when theologians speak of God’s aseity, they mean that God exists “from Himself”—not caused by anything else, not dependent on anything else, and not contingent on any external force. It’s a way of expressing that God is the uncaused cause, the only being who exists necessarily and eternally.
This concept became prominent in classical Christian theology through thinkers like Augustine, Anselm, and Aquinas, and later in Reformed theology through the Westminster Confession and others.
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