..."If God exists, I'm not sure I'm worshipping the right one
Look at human history and notice how many different gods have been named, praised and defended. There are thousands (millions when you include Hinduism). Is it possible that Christianity has it right? Yes, but the odds aren't overwhelming in our favor.
Even within Christianity, there are so many different perceptions of God. Benevolent father, vengeful deity, distant superpower... some Christians think God is just a big pile of love and others think God intentionally leveled Haiti with an earthquake to punish them for sin. That's a wide, wide range."
Check out the rest of his post "What I'm not sure about". It's a good read and his honesty is refreshing