A walk of atonement[1] is a public ritual of punishment and penance in the Faith of the Seven. It demands a confessed sinner to walk a certain distance stripped of all clothing, exposed to the eyes and jeers of the population. After being caught at a brothel in the middle of a session of blasphemous sexual roleplay, the High Septon is trapped by a group of Sparrows, stripped of all his clothes and forced to walk naked through the streets of King's Landing, while one of the Sparrows publicly name| Wiki of Westeros