The films are based on the 10 commandments. But only loosely. In the director’s words (as quoted in a film review by James Berardinelli): “The relationship between the films and the individual Commandments [is] a tentative one. The films should be influenced by the individual Commandments to the same degree that the Commandments influence our daily lives.”
Also from the director: “we concentrated more on what’s going on inside [the characters] than what’s happening on the outside.”

I know what you’re thinking after reading the above: gee, what a thrill that sounds like! watching 10 hours of introspective films about the Ten Commandments, sheesh, what does this guy think, we’re in an Alabama State Courthouse? I wonder what Adam Sandler has out at the cineplex.
You’ll be missing something.
Is all i can say.