Apr 3, 2012
I have a non-Christian friend who asked me to explain how it is that God did not have a beginning. I could not explain this challenging aspect of the Christian faith.
Would you kindly explain this for me to pass on to him?
Your friend asks a metaphysical question, which is best answered by St. Thomas Aquinas in his “Summa Theologica,” Part I, Article 10, on eternity. Let me see if I can summarize the argument.
Not only did God not have a beginning, he will have no end, because God is eternal. Your non-Christian friend will have difficulty understanding this just as Christians have difficulty understanding this, because the nature of God is far beyond anything we can relate to. The question of God’s existence, without a beginning and without an end, is not a specifically Christian issue.
It is largely a philosophical issue. The very nature of God is to exist. God has other attributes as well, many of which can be deduced by reasoning: God is eternal, immutable, omniscient and omnipotent.
Just for fun, try to wrap your mind around this explanation of eternity by the Angelic Doctor. (Warning! Pay very close attention.)