When skepticism is celebrated and the existence of God is questioned with increasing boldness, the Reformed Christian stands on the immovable foundation of Scripture. The question, “Why does God exist?” is, from the outset, a reversal of categories. God is not a being whose existence we prove by human reasoning—He is the One by whom all things, including reason itself, exist.

1. God’s Existence is Self-Evident in Creation (Psalm 19:1; Romans 1:20)

The heavens declare the glory of God. The stars, the seasons, the rhythm of life—all testify to an eternal, intelligent Creator. The Apostle Paul, with Puritan-like clarity, writes in Romans 1:20, “For His invisible attributes, namely, His eternal power and divine nature, have been clearly perceived, ever since the creation of the world...”

As articulated in the Westminster Confession of Faith, nature reveals enough of God to render all people without excuse. The Puritans saw nature not merely as matter, but as a theater of God's glory. Creation does not whisper about God; it shouts.

2. Scripture is God’s Self-Revelation (2 Timothy 3:16; Hebrews 1:1-3)

While creation declares His existence, Scripture declares His name. The Bible is not a book of human speculation, but divine revelation. As John Owen would argue, the Word of God is sufficient, authoritative, and clear. God reveals not only that He exists, but who He is: holy, sovereign, just, and gracious.

God is not discovered—He reveals Himself. In Hebrews 1:1-3, we are told that God has spoken finally in His Son, Jesus Christ. The existence of God is not debated in Scripture—it is presupposed. “In the beginning, God…” (Genesis 1:1).

3. The Testimony of Conscience (Romans 2:14-15)

God has written His law on every human heart. Even in the absence of a Bible or preacher, mankind bears a sense of right and wrong, of justice and guilt. This is what the Puritans called “the candle of the Lord” within man. The conscience affirms what God has already revealed. When people suppress this truth (Romans 1:18), it is not due to a lack of evidence, but a love for sin.

4. The Person and Work of Christ

The greatest proof of God’s existence is found not in an argument, but in a Person. Jesus Christ is the visible image of the invisible God (Colossians 1:15). His sinless life, atoning death, and victorious resurrection are historical facts grounded in the testimony of eyewitnesses. Put simply, Christ is both the proof of God and the path to God.

5. Faith is Not Blind but Spirit-Given (Hebrews 11:1)

Reformed theology affirms that faith is a gift of the Holy Spirit. We do not reason our way to God; rather, the Spirit opens blind eyes to behold Him. The Puritans taught that saving faith is not merely assent to facts—it is trust in a living Person, grounded in revealed truth.

6. The Witness of a Changed Life

The Puritans loved to point not only to the stars above, but to the hearts God changes. The drunkard made sober, the thief made generous, the proud made humble: these are living testimonies that God is not only there, but at work. Paul could write to the Corinthians, after listing the sins that once marked them, “And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God” (1 Cor. 6:11).

Every true conversion is a small resurrection. Many of us can point to a moment, or a season, when what we could not do for ourselves was done for us. That is not proof in a laboratory sense, but it is evidence of the God who “gives life to the dead and calls into existence the things that do not exist” (Rom. 4:17).

Answering the Honest Doubter

Not everyone who asks “Does God exist?” is a scoffer. Some ask from pain: a loss, an unanswered prayer, a wound from the church. The Puritans were physicians of the soul, and they knew the difference between rebellion and wounded doubt. To the one who doubts honestly, Scripture does not shout. It invites: “Come now, let us reason together, says the Lord” (Isa. 1:18).

If that is you, do not run from the question. Read the Gospel of John. Pray the honest prayer, “I believe; help my unbelief!” (Mark 9:24). Talk to a believer you trust. God is not offended by your seeking. He promises that those who seek Him with all their heart will find Him (Jer. 29:13).

The Question We Should Ask

The question is not whether God exists, but whether we will bow to the God who is. Denying God is not an intellectual problem—it is a moral rebellion. The fool says in his heart, “There is no God” (Psalm 14:1), not because of lack of evidence, but because of love for autonomy.

Yet, God calls all people to repentance, offering Himself freely in Christ. He is not merely an idea to be debated, but a Father to be worshipped, a King to be feared, and a Savior to be adored.

“Seek the Lord while He may be found; call upon Him while He is near.” — Isaiah 55:6