They said therefore to him, "What then do you do for a sign, that we may see, and believe you? What work do you do?

 Then Andrew appeared on the scene. He had discovered a lad with five barley loaves and two little fishes. Quite likely the boy had brought them as a picnic lunch. Maybe he was out for the day, and as a boy might, had got attached himself to the crowd. Andrew, as usual, was bringing people to Jesus. 