Some will immediately step back and say, "I have never said that I know there is no God. One can never tell whether there is a God or not." Well, if you cannot give a conclusion, I will ask witnesses whom I consider trustworthy to present arguments to you and prove the existence of God. Again let me say this, you are the judge, and I am the prosecutor. I am presenting only the evidence before you. Decide for yourself if there is a God.
First, look at nature, the world that is before our eyes and every phenomenon in it. We all know that scientific knowledge is the rational explanation of natural phenomena. For example, there is an observed drop in the temperature of a patient. The drop in temperature is a phenomenon, and the explanation for it is scientific knowledge. When an apple falls from the tree, it is a phenomenon. Why does an apple not fly into the air? The explanation for this phenomenon constitutes knowledge. A man with knowledge is a man who has the proper explanations.
ONLY TWO EXPLANATIONS
The universe displays countless phenomena of diverse forms, colors, shapes, and nature. We cannot fail to notice these phenomena before our eyes. The explanation for all these phenomena is known as knowledge. All thoughtful persons have only two explanations as far as the origin of the universe is concerned; there is no third explanation. You have to take one or the other of them.
What are these two explanations? The first says that the universe came into being through natural evolution and self-interaction; the second attributes its origin to a personified Being with intellect and purpose. These are the only two explanations presented by all philosophers of the world. There is not a third one.
Where did the universe come from? Did it come into existence by itself or through chance? Or was it designed by the One from whom we derive the concept of God? You have to think and then make a decision about it. Everything that is by chance has certain characteristics. I would suggest you list all of these in a detailed way, the more the better, and then compare all the phenomena of the universe with your list. Alongside of this make another list of the characteristics which, in your opinion, would be prominent if the universe were created by an intelligent Being. Now by a simple comparison of nature with your two lists, it will be easy to draw a reasonable conclusion.
(The Normal Christian Faith, Chapter 1, by Watchman Nee)