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What Is the First-Cause Argument for God’s Existence?

Even as a young boy I  often wondered how everything that existed came into being. I thought if the universe had a beginning then something must have brought the universe into existence. And that something, it seemed to me, must have been God. This is the essence of the first-cause argument for the existence of God, also referred to as the cosmological argument.

The premise is that everything that begins to exist must have a cause. So if you go back in time far enough you will find the first cause—and that cause will be Creator God. Actually this argument has three premises:

1. Whatever begins to exist has a cause.

2. The universe began to exist.

3. Therefore the universe has a cause.

The first premise works from the simple logic that something now exists (our universe) and that something cannot spring from nothing. It’s true that the combination of things can produce new things—for instance, two parts hydrogen and one part oxygen equals water—but that is not something coming out of nothing. The conclusion then is that whatever begins to exist has a cause—and the universe did indeed begin to exist.

The second premise, in part, makes its point from the second law of thermodynamics. That law states that the universe is expending all of its useful energy. So if the universe had no beginning—was infinitely old—then it would already have used up its useful energy. For example, our sun is burning its energy and will one day burn out. Therefore it, along with all the stars in the universe, had a beginning. (There is other scientific evidence that the universe began to exist, including the red-shift, the cosmic background microwave radiation, and the implications of Einstein’s General Theory of Relativity.)

The last premise builds on the previous two: the universe has a cause. The question then arises, “Who caused the cause?” We can derive our answer from the origins of time, space, and matter. It is logical to conclude that since time, space, and matter did not exist before the beginning of the universe, then the “cause” of the universe had to be timeless, spaceless, and immaterial. Further, this “cause” could not be physical or subject to natural law, since that would presuppose that its existence involved time, space, and matter. These, taken together, lead us to conclude that this timeless, spaceless, immaterial “cause” was God.

The first-cause argument is a strong one. In a nutshell, since the universe had a beginning, then something or someone had to cause it. And that someone was God. This may not get us all the way to the God of Abraham, Isaac, and Jacob, but it does rule out atheism as a plausible explanation for the origin of the universe.

This chapter originally appeared in 77 FAQs About God and the Bible by Sean McDowell and Josh McDowell (2012). Used by permission from Harvest House Publishers.




Before going further with his discussion we need to review another word that is closely allied to belief, which is the word ‘faith’

We need, I think, to bear in mind that not all witnesses speak the truth; that man can be a self-serving animal; and that even serial killers rationalise their actions.-J. Kale Flagg

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Sean McDowell is a teacher, author, speaker, husband and father. He is an avid fan of college basketball, ping-pong, and his favorite superhero is the Amazing Spiderman.