What would you consider to be evidence for God?

[robvalue]

I feel that actually witnessing a miracle firsthand would make me reconsider the possibility of the existence of a god. A miracle, to my understanding is not an occurrence that is just highly improbable or statistically unlikely. Another person's account of of a divine experience or miraculous event, is not something I would be able to consider.
If I were to witness something truly impossible happen with my own to eyes, I would be likely to consider there could be a force or forces operating outside  the laws of physics, nature, etc.

The problem is that if you witness something, and it really happened rather than being a hallucination or whatever, then it isn't impossible It just runs contrary to what we thought was possible.