John 6:15-21

15Perceiving then that they were about to come and take him by force to make him king, Jesus withdrew again to the mountain by himself. 16When evening came, his disciples went down to the sea, 17got into a boat, and started across the sea to Capernaum. It was now dark, and Jesus had not yet come to them. 18The sea became rough because a strong wind was blowing. 19When they had rowed about three or four miles, they saw Jesus walking on the sea and coming near the boat, and they were frightened. 20But he said to them, “It is I; do not be afraid.” 21Then they were glad to take him into the boat, and immediately the boat was at the land to which they were going.