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You are, again, arguing from ignorance (look it up). There is no evidence for the existence of god (or gods). The burden of proof is on the theist. To say "I don't believe in god because there is no evidence to suggest he exitsts" does not imply that one "knows everything". However, to claim god exists, without any evidence to support that claim, DOES suggest that the person making that claim thinks they "know" more than can be known.