There is a lot going on in the first two verses of John 21. Jesus manifests himself to the disciples by the Sea of Tiberias. Now, Tiberias is the Roman name for Galilee (see John 6:1). In verse 2, Nathaniel of Cana in Galilee is in this group of fishermen. In John 2, Cana in Galilee is the place where Jesus turns water into wine; lots of wine. Interestingly, the text only tells us of Nathaniel’s origin. In this passage Jesus is manifesting the abundance of His reign. There is a lot of wine in Cana of Galilee, and now a lot of fish.