Do you believe that things can appear out of nothing or out of nowhere? So, miracles. Jesus feeds the five thousand with five loaves and two fish. Clearly the math doesn't add up, which implies he got something out of nowhere. Jesus turns water into wine. Well something had to come out of nowhere to make that happen. Wine contains water, but also other stuff. Light appears out of nowhere "let there be light." Just some examples of something happening from nothing. Another argument is that God has to exist because how could the Earth just come from nothing? Well, if you believe in some of these miracles and you believe that something can appear out of nothing, then surely it could also be possible that the Earth, the universe, everything came from nothing. Also, where did God come from? Did he also come from nothing?