People, that can be included in some personal theism, believe without any sound proof (like most religions) that there is some invisible God/gods out there. But also they believe in a lot of other stuff that science can't prove.
It's not necessary to believe in God (or something like that) to be part of God's Community. Faith in something unknown is not a requirement in order to be part of God's Community. We have our believe system based in facts, science, experiences, computation of possibilities and logicreasoning; but you still could believe in other unproven stuff.
