He doesn't HAVE to show himself to you through anything other than what he already has given us. He gave us the Bible so that we could read and believe. He's also not at your beck and call. Saying "God show yourself to me damnit or i wont believe in you!" Is approaching faith at the wrong angle. If you were serious about wanting to see God, and willing to accept that he may not appear in some Hollywood movie sort of way, you should try this: SINCERELY pray to Him asking for Him to open your eyes to His grace and love. Simple as that.