The first three verses of today’s text, which appear immediately after the miracle of walking on the water, serve as transition verses for the dialogue with the people and the discourse on the bread of life that follow. They also serve to bring the crowd, which had eaten at the miraculous feeding of the five thousand, back into the story and so, link Jesus’ words that follow with the feeding miracle and the miracle of walking on the water.
Since the crowd has not been privy to the miracle of Jesus walking on the water, they wonder how he got to the other side. Jesus does not answer their question but draws attention to their reason for seeking him. Though they have seen the sign that Jesus gave at the miraculous feeding, they were not able to perceive it because their attention was directed to the earthly and temporary, not to the heavenly and permanent. Even as they seek him for temporary food, Jesus invites them to a higher seeking. He asks them to seek for the food that only he can give, the food that endures forever. Jesus is competent to give this food because the Father himself has approved and set his seal on Jesus. In response to Jesus’ statement to not work for food that perishes, the crowd interprets the word “work” to mean certain actions that they must perform to acquire this food. Jesus corrects this misunderstanding by explaining what is meant by “work”. They must believe in Jesus who has been sent by God.
Believing in Jesus does not only mean a verbal profession of faith. In the Gospel of John, the term believing is, most often, used to describe faith that shows itself in action. This is why believing is akin to work. Jesus does not provide merely physical nourishment, but also nourishment of the mind, heart, and spirit. To know and believe in Jesus is to be sated in every aspect of life. It is to never lack or want anything, because all things are provided in him.