Here is a list of movies on theme of God. I have extracted those movies from the program Yer Gösterici (in Turkish). The link of the program is at the last of the list. A nice program to watch.
In that list, my personal favourite is Seventh Seal by Ingmar Bergman. Although it is not directly related with theme of God, Winter Light by Ingmar Bergman is also a stunning movie that its story takes place among themes of war, church community, a priest and deadlock love story.
Bruce Almighty (2003)
Monty Python and the Holy Grail (1975)
Exodus: Gods and Kings (2014)
Oh, God! (1977)
Oh, God! Book II (1980)
The Seventh Seal (1957)
The Last Temptation of Christ (1988)
The Invention of Lying (2009)
Inherit the Wind (1960)