Belief in God is rational.
Everything has a cause. So unless there is a first cause, then you would have an infinite regress. And then nothing could exist. Therefore there must be a first cause. Therefore God, the first cause, exists. QED. (You could prove the first step a priori that everything has a cause by noting that nothing can come from nothing. This makes it a priori, not just an empirical observation).
A music file for the glory of God. I am grateful to God for granting to me to write this and all the music he has ever or will ever grant to me. Also I am grateful to have not lost it like I thought I had.