It seems necessary to state the obvious here. Either the universe had a definite beginning point in time, or it has existed eternally. Many, particularly those enamoured of pantheism, maintain that the universe and all that it contains is God. That everything is God - I'm God, you're God, the table that I'm writing on is God. This viewpoint requires that there was no creation, but that the universe is eternal. Scientifically, however, eternal existence is not possible due to...
The Laws of Thermodynamics
In view of the first and second laws of Thermodynamics, the universe must have had a beginning point. The first law states that there is a finite amount of energy in a closed system. The second states that as energy is transferred some amount becomes unusable.
For example, my wristwatch is a closed system. Inside there is a finite amount of energy - the battery, and some stored momentum. As energy is transferred from its storage location to the gears of my watch, some of it becomes unusable through friction, and it eventually runs out.
The universe, like my watch, is also a closed system (granted a big one). And like my watch, it too is gradually winding down. In other words it has a life span. At some point it will run out of energy. Now, if the universe always existed then it would have run out by now. It must have had a beginning point. This same sort of running down happens with all matter. Chemicals break down, energy sources get used up, and things wear out. Duane Gish, Professor of Biochemistry at University of California at Berkeley, stated the dramatic impact of this principle on the theory of evolution.
"Of all the statements that have been made with respect to theories on the origin of life, the statement that the Second Law of Thermodynamics poses no problem for an evolutionary origin of life is the most absurd... The operation of natural processes on which the Second Law of Thermodynamics is based is alone sufficient, therefore, to preclude the spontaneous evolutionary origin of the immense biological order required for the origin of life." 1
Evolutionists would have us believe that billions of years would undo this process, but as Dr. Gish states, this is absurd. Billions of years of things wearing out and running down make the universe less usable, less orderly, and less capable of creating and sustaining life.