The Greek verb zōnnymi (ζώννυμι) means to gird, to fasten a belt or sash around the waist. It appears three times in the NT (John 21:18 twice; Acts 12:8). In the ancient world, girding the waist was essential for active work or travel — it gathered loose robes to allow free movement.
The most theologically significant use of zōnnymi is in Jesus' words to Peter in John 21:18: 'When you were young, you used to dress yourself (ezōnnyes) and walk wherever you wished, but when you are old, you will stretch out your hands, and another will dress you (zōsei) and carry you where you do not wish to go.' John adds that Jesus said this 'to show by what kind of death he was to glorify God' (21:19) — a clear reference to Peter's crucifixion. The contrast between self-girding (autonomy) and being girded by another (surrender) captures the essence of discipleship's trajectory: from self-will to submission.