What is the main conflict in The Green Pastures by Marc Connelly?

The Green Pastures, the Pulitzer Prize-winning play by Marc Connelly, is a reenactment of stories of the Old Testament in which all the characters (including God) are African American and speak in a black southern dialect. The play was first performed at the Mansfield Theatre in New York City in 1930. Connelly attributes his idea for the play to the retelling of Old Testament stories in Roark Bradford's book Southern Sketches, "Ol' Man Adam an' His Chillun."