Is there a God? Although most everyone has a firm belief one way or the other, doubts can easily find their way into an airtight faith. The Bible tells us in Psa. 90:2 that God’s existence is “from everlasting to everlasting.” He is eternal, existing before the creation of the earth. But how do we know, with 100% certainty, that this is true? When doubts and questions cause my faith to falter, these are some of the reasons that reassure me of God’s existence. I hope they will help quiet any doubts you have as they have often quieted mine.
1. I believe in God because order does not naturally come from disorder.
How did the Earth and the universe come to exist? The Big Bang theory explains the origin of the universe with an explosion.
I am not a scientist, and I am certainly not an authority on thermodynamics, but I can understand the field’s two foundational laws1:
- Energy can be neither created nor destroyed.
- Disorder increases within a closed system (entropy).
According to the Big Bang theory, the universe gradually shifted from disorder to order, demanding that nature momentarily reverse the law of entropy, which inexplicably shoves this scientific law to the side. Paul C. Davies, a physicist, asked, “The greatest puzzle is where all the order in the universe came from originally. How did the cosmos get wound up, if the second law of thermodynamics predicts asymmetric unwinding towards disorder? [emphasis added]2” The law of entropy points to a simple truth: the effect (an orderly universe) must have a cause (a Creator).
2. I believe in God because the precision of the universe could not be random.
Psa. 19:1 tells us, “The heavens declare the glory of God, and the sky above proclaims his handiwork.” The universe is intricate and precisely run, and based on its intricacy, the design simply could not have been accidental. Consider a few facts about the precision of our solar system:
- If the Earth were 10% closer to the Sun, too much radiation and heat would be absorbed. If the planet were 10% farther away, we would receive too little heat to sustain life.
- In its orbit, the Earth departs from a straight line by 1/9 of an inch every 18 miles. Departing by 1/8 of an inch would bring the planet far too close to the Sun, while departing by 1/10 of an inch would cause Earth to become too cold.
- Earth’s atmosphere has the right mixture of gases (mostly nitrogen and oxygen). The thickness of the atmosphere keeps Earth from being pounded with meteors and the ozone layer keeps us from receiving too much radiation.
Can we really believe that things become more organized—specifically, a perfectly orderly, ideal living environment—when they explode? Believing that there was no Creator requires us to believe that the universe did not follow the law of entropy. Nature’s intricate balance indicates an intelligently designed order within the universe.
3. I believe in God because of our capacity for morality.
If there is no God, any sense of right and wrong is invented by man. With this reasoning, couldn’t we choose any set of “morals” we wanted? There would be no justification for morally opposing slavery, prejudice against the weak, or even murder. In a godless world, the fittest survive, and there is no reason morals should get in the way of holding the top spot on the evolutionary ladder. If humans are just another set of molecules happening through the universe, it doesn’t make sense that they would all have moral codes—morality would hinder the quest for evolutionary kingship.
Psa. 14:1 says, “The fool says in his heart, ‘There is no God.’” However, although we have compelling evidence to show God’s existence, the age-old question is still tough to answer, especially when we are surrounded by scientists and professors who loudly deny that He exists. If your doubts feel overwhelming, remember that both reasoning and science point us toward faith in the almighty God.
1Johnson, George & Losos, Jonathan. The Living World 6th ed., p. 111. McGraw Hill (2010).
2 Davies, Paul C. “Universe in Reverse: Can Time Run Backwards?”, p. 27. Second Look. King’s College (September 1979).