What is the best way to prove God's existence?

Everything we need to prove God's existence is all around us. We only need to look around and think. It's as simple as Rom. 1:19-20 says, "because that which may be known of God is manifest in them. For the invisible things him from the creation of the world are clearly seen, being understood by the things that are made ... so that they are without excuse." The eternal power of God is seen in what he has created.

The so-called Big Bang Theory which postulates that a large quantity of nothing came together to form hydrogen and helium that eventually formed stars, galaxies, planets and moons has no legs to stand in commonsense. This could be what Rom. 1:21 alluded to by saying, "... when they knew God, they glorified him not as God... but became vain in their imagination, and their foolish heart was darkened."

I agree with Brother Eli that the Big Bang Theory is a nonsense theory, for one, it is not reasonable that some quantities of nothing could come together to form something.

Everything that came into existence was made possible by the creator just a house was made by a builder. Assuming the Earth came into being by accident, there would be total chaos. But looking at the universe, you see order and symmetry - galaxies, stars and planets traveling a definite path in space with speed.