If you know a group of devout Christians, you will frequently hear them say to each other (and even to people outside the group) things like this:

My husband and I are not sure what to do in this situation. We are going to pray to God and see what he tells us to do.

In other words, Christians believe that God transmits divine messages to his followers in response to prayer. Christians actually believe that the almighty, all-knowing creator of the universe is talking to them personally and guiding their decisions.

Now think about this. Let's say that the all-powerful, all-knowing creator of the universe was going to transmit personal messages to Christians. Wouldn't you expect the people receiving these messages to blow the rest of us away in every intellectual endeavor? Wouldn't you expect someone who is directed by God to be a genius? Wouldn't every Christian student get a perfect score on every test simply by praying to God for the answers?

Imagine, for example, that a Christian is having trouble deciding what color couch to buy. So she prays to God for guidance. Wouldn't you expect the all-powerful, all-knowing creator of the universe to come back with a message that just completely blows all of us away? For example, wouldn't you expect a Christian to say:

You know, I prayed to God to help me decide which color couch to buy, and the next thing I hear is God's voice in my head! And he starts telling me how to build a nuclear fusion reactor that will completely solve the world's energy problems! It's some kind of crazy laser-pumped Tokamak thing. I have no idea what he was talking about, but I was the vessel for his spirit, and I have transcribed the messages and diagrams that God sent to my brain in these 14 notebooks. You can see that we now have complete construction details for a perfect, pollution free, inexpensive fusion reactor -- Praise the Lord!"

The fact that God's messages to Christians are completely mundane tells us that God is imaginary. What the Christian typically gets is this message: "Buy the red couch." That message, of course, is the Christian's own brain making a decision, because God is completely imaginary.