Christians, what is your VERY BEST arguments for the existence of God?

[roundsquare]

In an earlier post i pointed out that space-time including energy/matter had a beginning, this is what modern cosmology in the form of the big bang would have us understand. so whatever the cause of the universe is, it has to be non-spatial and timeless because these things began to exist at finite past, 15-20 billion years ago is cosmologists estimations of when the big bang occured, the cause of the universe also has to be immaterial because matter began to exist again at a finite past. the complexity of lifeforms and the simple yet mightilly effective laws that run the universe hint that the cause of the universe should also be intelligent and powerfull. it is up to you to decide what or who you want to identify as the creator but this creator of the universe curiously fit the description of the judeo-christian GOD. NOW the question what caused the creator is irrelevant caused or uncaused he is still the creator, however to avoid an infinite regress of creators, in keeping with occams razor its better to say that GOD has no cause, to keep things clean and simple.