You’ve Got Questions: Does God Exist?
It’s the most significant question of all time: Is there a God, or isn’t there? How can we believe in Christianity if we don’t even know whether God exists? There are many arguments for the existence of God and these arguments attempt to analyze the evidence, especially the evidence from nature, in extremely careful and logically precise ways, in order to persuade people that it is irrational to reject the idea of God’s existence. It is “the fool” who says in his heart, “There is no God” (Psalm 14:1). Belief in God’s existence is not based on some blind hope apart from any evidence, but it is based on an overwhelming amount of evidence from both the Bible and Creation. These evidences can be seen as valid proofs for the existence of God, even though some still reject them. Why should you believe in God?
Cause and Effect
Proving God’s existence by observing the world around us begins with affirming what is most obvious in all reality: things exist. There is no rational argument that can deny that things exist. Also, there is no rational argument that can deny that the universe exists. If the universe exists, then it must have had a beginning. The universe had a beginning; therefore, the universe had a cause. This is the Law of Cause and Effect, every effect must have a cause. In other words, everything that happens has a catalyst; everything that came into being has something that caused it. Things don’t just happen by themselves. So, when you consider the fact that every known thing in the universe has a cause, you are left asking, “Who or what caused the universe?”
That cause, being outside the whole universe, is God. Many argue that some things are caused by other things, but this does not solve the problem. This is because those other things had to have causes, too, and this cannot go on forever. For example, all trees began to exist at some point (for they have not always existed). Each tree had its beginning in a seed (the “cause” of the tree). But every seed had its beginning (“cause”) in another tree. There cannot be an infinite series of tree-seed-tree-seed, because no series is infinite—it cannot go on forever. All series have two endings at the end and at the beginning. So in relation to the cause of the universe, something that does not need to be given existence must exist to give everything else existence. This something would have to always exist, have no cause, have no beginning, have no limit, be outside of time, and be infinite. That something is God. This affirms the foundational verse for the entire Bible, “In the beginning, God created the heavens and the earth” (Genesis 1:1).
Created With Purpose
We already know that the universe requires a Creator, but what about the design, harmony, and order of the universe? The orderly world in which we live clearly demonstrates that a great mind was behind its arrangement. The Bible identifies God as that great intelligence. So, the existence of God is also proven by the order and useful arrangement in the universe. When we are walking on a beach and find a wristwatch, we do not assume that time and random chance produced the watch from blowing sand. Why? Because it has the clear marks of design—it has a purpose, it conveys information, it is specifically complex. No scientific field considers design to be spontaneous; it always implies a designer. With all the design evident in our universe, it’s no wonder Job says, “But ask the beasts, and they will teach you; the birds of the heavens, and they will tell you; or the bushes of the earth, and they will teach you; and the fish of the sea will declare to you. Who among all these does not know that the hand of the LORD has done this? In his hand is the life of every living thing and the breath of all mankind” (Job 12:7-10 ESV).
We know that every life form in Earth’s history has been highly complex. For example, the amount of information in the 3 billion base pairs in the DNA of every human cell is equivalent to that in 1,000 books of encyclopedia size. Similarly, the human brain has approximately 10 billion gigabytes of capacity. Besides living things here on Earth, the whole universe seems designed for life. There are literally hundreds of conditions necessary for life on Earth—everything from the mass density of the universe down to earthquake activity must be fine-tuned in order for life to survive. The random chance of all of these things occurring is literally beyond imagination. Wayne Grudem writes, “Since the universe appears to be designed with purpose, there must be an intelligent and purposeful God who created it to function this way.” (1)
Human beings are unique among God’s creation in that we are moral creatures. That’s one of the many things that separate us from the animals—we have a distinctive knowledge of right and wrong, and so for example, we set up court systems with punishment for wrongdoing. So, we need to face the fact that all people recognize some moral code—that some things are right, and some things are wrong. In fact, every time we argue over right and wrong, we appeal to a higher law that we assume everyone is aware of, holds to, and is not free to arbitrarily change. If right and wrong imply a higher standard or law, then that law requires a lawgiver. There must be a God who is the source of right and wrong and who will someday mete our justice to all people. We see that even the most remote tribes who have been cut off from the rest of civilization observe a moral code similar to everyone else’s.
Differences certainly exist in civil matters, but things bravery and loyalty, greed and cowardice, are universal. If man were responsible for inventing this code of morality, then it would differ as much as every other thing that man has invented. Romans 2:14-15 says, “For when Gentiles, who do not have the law, by nature do what the law requires, they are a law to themselves, even though they do not have the law. They show that the work of the law is written on their hearts, while their conscience also bears witness. . .” (emphasis mine). Paul is saying here that the Gentiles’ consciences attest to what is right and what is wrong in their behavior. Paul isn’t saying that the testimony of human conscience is always a perfect moral guide, but the very existence of this testimony is sufficient to render people accountable to God. Without God there would be no objective basis for morality, no life, and no reason to live it. Yet all these things do exist, and so does God.