If you don’t do your part, don’t blame God.

The line encapsulates a hallmark of Billy Sunday’s revivalist preaching: a blunt insistence on personal responsibility within a framework of Christian faith. Rather than treating divine providence as an excuse for passivity or failure, the saying rebukes the tendency to externalize blame—especially onto God—when one has neglected one’s own duties. It implies a cooperative moral economy: prayer and belief do not replace effort, repentance, or ethical action. In Sunday’s rhetorical style, the aphorism functions as a sharp, memorable corrective aimed at stirring listeners to practical reform and self-discipline, aligning religious commitment with concrete behavior.