...schmargument! You don't find God by arguing. In whatever spiritual discipline you choose, the matter is, in the end, between you and God, not between debate teams. A relationship with God is not passed down to you by pious church-going parents or imparted by a touch from a guru's cosmic index finger. DIY. Just Do It. Skate Tough or Go Home. Take the Leap. Hot air only gets you hot air. Wisdom does not contain hot air; it contains work, sincerity, humility, and patience.
God, the I AM in the Judeo-Christian tradition - no "was" or "will be"; no hard linearity vis-à-vis His "origin" or activity - is outside of time and causes-and-effects. He is. Uncaused. Full stop. No contradiction - He is not a "thing". Why must we cut God down to our own size? Why do so many humans seem to think the mundane world is the all-that of life? Our minds and senses only scratch the tip of the iceberg of is. This is like an Intel chipset arguing over the existence of Andy Grove.