Cheimarrhos refers to a stream or brook that flows strongly in winter due to rain and snowmelt but may dry up in summer—a seasonal watercourse or wadi. John uses it to identify the location where Jesus and his disciples went after the Last Supper: they crossed 'the brook Kidron' on their way to the garden where Jesus would be arrested. The Kidron Valley runs between Jerusalem and the Mount of Olives, and its stream would have been flowing during Passover season in spring. This geographical detail anchors the passion narrative in the physical landscape of Jerusalem.