What does Luke 3:11 mean?
John the Baptist preaches repentance. His underlying theme is that sincerity before God is required to escape judgment. That humble submission is demonstrated by acts corresponding to a repentant heart (Luke 3:1–6). Those who think doing good works, or being baptized, or being Jewish are enough to earn salvation are terribly mistaken (Luke 3:7–8). In this passage, John addresses what repentance from sin looks like, in practice, among different groups of people in his era.The public has asked John "what then shall we do" (Luke 3:10) in response to his challenge. His answer encourages sacrificial love for one's neighbor (Mark 12:28–31). This is represented by caring for other people's basic needs—such as clothing and food—when we have enough for ourselves. The tunic in question was effectively an undergarment; this underscores the statement as a reference to fundamental human needs.