John 6:15-20

15 When Jesus therefore perceived that they would come and take him by force, to make him a king, he departed again into a mountain himself alone.

16 And when even was now come, his disciples went down unto the sea,

17 And entered into a ship, and went over the sea toward Capernaum. And it was now dark, and Jesus was not come to them.

18 And the sea arose by reason of a great wind that blew.

19 So when they had rowed about five and twenty or thirty furlongs, they see Jesus walking on the sea, and drawing nigh unto the ship: and they were afraid.

20 But he saith unto them, It is I; be not afraid.