The Cosmological Argument: Why the Universe Needs a Cause

The cosmological argument, one of the oldest and most compelling proofs for the existence of God, asserts that the universe must have a cause. Its foundation lies in the principle of causality: everything that begins to exist has a cause. Scientific discoveries and philosophical reasoning bolster this argument, making a strong case for a Creator.

The Universe Had a Beginning. One of the most significant discoveries of modern science is that the universe had a beginning. The Big Bang theory, widely accepted among cosmologists, posits that all matter, energy, space, and time originated from a singular event approximately 13.8 billion years ago. Before this point, there was no time, space, or physical reality. This supports the biblical assertion that the universe is not eternal but was created, as described in Genesis 1:1: “In the beginning, God created the heaven and the earth.” (other evidence supports the Biblical narrative for the age of the Earth)

The Second Law of Thermodynamics also supports this conclusion. The universe is moving toward a state of increased entropy, or disorder, which implies that it had an initial highly ordered state. If the universe were eternal, it would have already reached maximum entropy, contradicting observable reality.

Causality and the Need for a Cause. The principle of causality states that everything that begins to exist has a cause. Since the universe began to exist, it must have a cause. However, this cause cannot be part of the physical universe because time, space, and matter only came into existence at the universe’s origin. Therefore, the cause must be timeless, spaceless, and immaterial—qualities that align with the biblical description of God.

Hebrews 11:3 affirms this: “Through faith, we understand that the worlds were framed by the word of God so that things which are seen were not made of things which do appear.” This aligns with the cosmological argument, as it emphasizes that the universe was caused by something outside itself.

The Impossibility of Infinite Regress. An infinite regress of causes—where every cause has a prior cause—leads to logical contradictions. If there were no first cause, the chain of causes could never begin, and the universe could not exist. This necessitates a first, uncaused cause, which philosophers and theologians identify as God.

The cosmological argument is reinforced by scientific evidence that the universe had a beginning, philosophical reasoning on causality, and the impossibility of infinite regress. These findings point to a timeless, spaceless, immaterial, and powerful Creator—attributes consistent with the God of the Bible. As Psalm 33:6 declares, “By the word of the Lord were the heavens made; and all the host of them by the breath of his mouth.”

Sources:
• Craig, W.L. Reasonable Faith: Christian Truth and Apologetics.
• Hawking, S., and Mlodinow, L. The Grand Design.
• Genesis 1:1, Hebrews 11:3, Psalm 33:6 (KJV).

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