One of my friends (non-Mormon) is agnostic. He has recently decided to try an experiment to determine if God exists as he really wants to be a believer. He is going to pray and focus his energy on “connecting” with God, if he exists. He asked for my thoughts and suggestions. I mentioned that it seems like an interesting approach and the key will be to determine what is the desired output – in other words, how do you measure success? How do you know God has acknowledged his existence? I mentioned some of the biblical verses like Galatians 5:22 as examples of how God may communicate his existence. Any other thoughts?