A Quick Ontological Argument for the Existence of God
1. It is possible that a necessary divine being exists.
2. If a being possibly exists, then it exists in some possible world.
3. Therefore a necessary divine being exists in some possible world (from #1, #2).
4. If a necessary being exists in some possible world, then it exists in all possible worlds.
5. Therefore a necessary divine being exists in all possible worlds (from #3, #4).
6. Therefore a necessary divine being exists (from #5).
The conclusion obviously follows from the premises, so the only question is whether the premises are probably correct. Both #2 and #4, in effect, are simply ways of stating what the words “possible” and “necessary” actually mean, and as such are not as controversial as they might appear. So the real debate is over #1 - but this, to most people, sounds intuitively correct. I’m not saying it will compel people to repent of their sins and follow Jesus, but it’s a good one to pull out at parties, isn’t it? (Presumably it depends on the parties.)