“What is God?”
God is a Spirit, infinite, eternal, and unchangeable, in His being, wisdom, power, holiness, justice, goodness, and truth. Westminster Shorter Catechism, Q. 4
Last night in youth group, we began exploring one of the most profound and beautiful questions ever asked: What is God? It’s not a question of curiosity alone, but of worship. To ask what God is, is to seek to know the One for whom and by whom all things exist. And even though the answer stretches beyond the capacity of our minds, God has graciously revealed enough of Himself that we might glorify and enjoy Him.
God Is a Spirit
The catechism begins by reminding us that God is a Spirit. That means God is not made up of matter, does not have a body, and is not limited by space or form. He is invisible, immaterial, and incorporeal. As Jesus said, “God is spirit, and those who worship him must worship in spirit and truth” (John 4:24).
This doesn’t make God less real, but more real. Everything physical and visible depends upon Him for existence, but He depends upon nothing. We live and move and have our being in Him. God is not a part of creation; He is its source, its author, and its sustainer. The reality we experience is derivative; His being is absolute. In that sense, God is not just real, He is Reality itself.
When we think of God as Spirit, we’re not imagining some ghostly vapor or invisible force. We are acknowledging the One whose existence defines all others. Our bodies may fail, our world may fade, but the Spirit of the Lord endures forever. That truth steadies our faith and sharpens our worship.
God Is Infinite
To say that God is infinite is to say there are no limits to His being, knowledge, power, or presence. He is boundless. We live within borders, of time, of strength, of understanding, but God does not. “Great is the Lord, and greatly to be praised, and his greatness is unsearchable” (Ps. 145:3).
There is nothing beyond God’s reach, ability, or comprehension. Every mystery is open before Him; every moment is in His hand. And for finite creatures like us, that’s both humbling and comforting. We cannot outthink, outlast, or outmaneuver Him. But we can rest in the truth that His infinite wisdom is for our good.
God Is Eternal
God is also eternal. He has no beginning and no end. Time is His creation; He is not bound by it. “From everlasting to everlasting, You are God” (Ps. 90:2).
This means there was never a time when God was not. He didn’t come into being. No one made Him, for then that maker would be God. He simply is; the great I AM. Every creature, every galaxy, every second owes its existence to Him. He stands before and beyond all of it, yet He is intimately present in every moment.
Because God is eternal, His purposes never fail, and His promises never expire. The same God who called Abraham, who delivered Israel, who raised Christ from the dead, is our God today, and will be our God forever.
God Is Unchangeable
Finally, God is unchangeable. He does not grow, diminish, or shift. His being, will, and purposes are constant. “I the LORD do not change; therefore you, O children of Jacob, are not consumed” (Mal. 3:6).
This is not to say that God is static or indifferent. He acts, responds, and reveals, but always in perfect consistency with His nature. His character doesn’t fluctuate with our moods or mistakes. Nothing outside of Him can alter who He is.
There is immense comfort in this truth. The same love that chose us before the foundation of the world sustains us today. The same grace that forgave us yesterday will carry us home tomorrow. In a world where everything changes, God does not.
The Call to Know Him
To confess that God is Spirit, infinite, eternal, and unchangeable is not merely an intellectual exercise, it is a call to worship and wonder. The more we know of God, the more we are drawn to love Him. The more we behold His greatness, the more we rest in His goodness.
Our understanding will always be limited, but our calling is clear: “Let him who boasts boast in this, that he understands and knows Me, that I am the Lord” (Jer. 9:24).
We may not fully comprehend the infinite, eternal, and unchangeable God, but we can truly know Him, for He has made Himself known in Jesus Christ. And to know Him is life itself.
SDG
