The skeptic asks, “If God created the universe, then who created God?”
God, by definition, is uncreated, so the question, “Who created God?” is illogical. A better question would be, “If the universe needs a cause, then why doesn’t God need a cause? And if God doesn’t need a cause, why should the universe need one?”
Everything which has a beginning has a cause. If the universe had a beginning; then the universe has a cause. God, however had no beginning, so he does not need a cause.