In another thread, the question has come up as to whether or not we can have what I will call a "natural knowlege of God." People around the world seem to have different concepts of God and this fact could lend itself to the view that we just can't know what God is really like (or even if he exists). We all must be content just to have our own "faith perspectives" on the issue.
On the contrary, I think we can
know some things about God simply by reflecting rationally on the nature of that being--call him/it what you will--who created the universe out of nothing. I am alluding, of course, to the age-old tradition of natural theology which offered rational arugments for God's existence and then deduced from those arguments' conclusions some characteristics of God. To be sure, the soundness of those deductions depends upon the prior soundness of the initial arguments for God's existence. So, we will have to start there.
Here is one arugment for God's existence that has proven to be very powerful and persuasive in much contemporary discussion. It's called the
kalam cosmological argument:
(1) If the universe had no beginning, then an actual infinite number of events would have occurred prior to the present moment.
(2) It is impossible that an actual infinite number of events occur prior to any moment.
(3) Therefore, the universe had a beginning.
Premise (1) of this argument is uncontroversial. If the universe literally had no beginning, then that logically entails that the set comprising all those past events prior to the present moment contains an actual infinite number of members. Put more simply, if the universe had no beginning (i.e., if the universe is eternal), then prior to the present moment there would have occurred an actual infinite number of past events.
Premise (2) is the crucial premise here. William Lane Craig and others have shown that an infinite number of concrete entities, including historical events, cannot exist because it would lead to absurdities. For example, let us imagine a library which contains an actual infinite number of books. And let us suppose that half the books are colored red and half the books are colored blue. And let us further suppose that someone visits the library and checks out all of the red books. How many books are left in the library? As unbelievable as it sounds, according to infinite set theory, the same number of books remains in the library as before the visitor arrived! But surely there could not really be such a library—a library in which half the books are checked out and yet the number of books in the library is not diminished! The idea that an actual infinite exists in reality is logically absurd. For the same reason, there cannot really be an infinite number of past events. Therefore, the universe must have had a beginning.
The second premise of our argument may be defended another way. If the set of past events has an actually infinite number of members, then that means that in order for history to have reached the present moment, an infinite number of past events would have to have been “crossed” or formed one-at-a-time, since history progresses linearly and is not given all at once.
But, here’s the problem: by definition, an infinite number of events cannot be crossed one-at-a-time. A set with a number of members that can be traversed or completed, is by definition a finite set. It is just not possible to cross an actual infinite. To illustrate, Craig asks us to imagine a man who claims to have been counting down from infinity: . . . -3, -2, -1, 0. Why didn’t he finish yesterday? Or last year? Or a million years ago? For at any point in the past, he will have already crossed an infinite! That is, if the past has no beginning, then prior to any point in the past an actual infinite number of events will have already transpired. As Craig explains,
Thus, at no point in the infinite past could we ever find the man finishing his countdown, for by that point he should already be done! In fact, no matter how far back into the past we go, we can never find the man counting at all, for at any point we reach he will already have finished. But if at no point in the past do we find him counting, this contradicts the hypothesis that he has been counting from eternity. (
Reasonable Faith, p. 99)
So, the number of past events must be finite, not infinite, and that means that the universe began to exist a finite time ago. Futher, we also know that something cannot come from nothing. More specifically, we know that whatever begins to exist has a cause. Thus, the beginning of the universe had a cause.
Now we come to the crucial question for this blog thread. What can we know about this cause of the universe? Several things. The first cause of the universe must be:
1. Eternal (existing outside of time) and non-spatial because it is the creator of the space-time universe.
2. Changeless/Immutable since to exist outside of time implies the absence of change.
3. Immaterial (non-physical) because materiality requires the potential for change.
4. Uncaused because if it were caused, then it would not be the ultimate cause of the universe and the first event (beginning) of the universe would not have been the first event, which is absurd. Moreover, the fact that the cause is timelessly eternal and immutable implies that it is uncaused and self-existent.
5. Enormously Powerful, if not omnipotent, because it brought the universe into existence from nothing.
6. Personal because only a personal being could account for the spontaneous beginning of the universe from nothing. If the cause of the universe were non-personal (i.e., some physical, natural cause), then that cause is either eternal or not eternal. If the cause is eternal, then the universe would also be eternal because when the necessary and sufficient conditions for some physical effect exist, then the effect exists. For example, the necessary and sufficient conditions for fire are fuel, oxygen, and heat. When these three elements come together at the same time and place, fire is the inevitable result. So, if fuel, oxygen, and heat existed together eternally, there would be an eternal fire. Likewise, if the necessary and sufficient conditions for the existence of the universe were eternal, the universe would be eternal. However, we have already seen that the universe is not eternal, but had a beginning. On the other hand, if the supposed non-personal necessary and sufficient conditions of the universe’s beginning were not eternal, then the cause must have changed prior to the first event of the universe. But we have already seen that the cause must be changeless and timeless. So, the cause of the universe could not have been a non-personal, physical cause. Only a personal agent who can act and will for things to happen apart from prior physical conditions is adequate to explain the beginning of the universe.
7. Good because he apparently designed a very complex universe in order that human life might live and thrive.
This sounds a lot like the Christian God, doesn't it?