Science has come a long way now that we're in the 21st century. But it looks as if there's a tough problem. Many believe the Big Bang was the beginning of the universe and this is evident how it is still expanding and thus believed to be finite and had a beginning. But if we were to keep going back we'd never find a first cause as we would have to explain what initiated the Big Bang and what caused the initiation to initiate and so on and it would be an infinite regress. There would likely be no answer everybody would be satisfied with. However, consider that God is supernatural and created these laws and not bound by them. Therefore, since we're a part of God's creation the very laws and way of thinking apply. So in his realm, it could be possible that Infinite regression is nullified as he's always existed but the universe cannot since it's finite. No, I don't believe in Jesus but I am a theist.