What is the theme in The Threepenny Opera by Bertolt Brecht?

The main theme of the play involves betrayal and moral corruption. Like the "greatest story ever told," the story of Jesus, the protagonist of The Threepenny Opera is betrayed by a former intimate, But there the similarity ends, or rather, diverts to mirrored opposites. Macheath is not a savior like Christ but a moral corrupter, not a paragon of virtue but a f ountainhead of sin, not the archetypal human ideal but a base man of bestial instinct. In contrast to Jesus, he mames the woman with whom he has been sleeping in a stable rather than being born of a chaste woman in a stable. The wedding gown and gifts are not humble attire and ritual offerings but stolen goods.