I just finished a sermon series on objections to the Christian faith by ending at the beginning: the question of atheism.
If a person doesn't believe in God, all of the other arguments for Christianity don't matter.
So how can I believe that God exists? By three thoughts:
1. It is impossible to prove that God does not exist.
2. It is reasonable to believe that God does exist.
3. It is foolish not to seek God if He does exist.
[To read this entire sermon, click on the comments and read the first comment below.]