John the Apostle
John 6:19WEB·traditional attribution

When therefore they had rowed about twenty-five or thirty stadia, they saw Jesus walking on the sea, and drawing near to the boat; and they were afraid.

Jamieson-Fausset-Brown Reformed

JESUS WALKS ON THE SEA. (Joh 6:14-21) that prophet--(See on Joh 1:21).

Commenting on John 6:14-21

Jamieson-Fausset-Brown Reformed

they see Jesus--"about the fourth watch of the night" (Mat 14:25; Mar 6:48), or between three and six in the morning. walking on the sea--What Job (Job 9:8) celebrates as the distinguishing prerogative of GOD, "WHO ALONE spreadeth out the heavens, and TREADETH UPON THE WAVES OF THE SEA"--What AGUR challenges as GOD'S unapproachable prerogative, to "GATHER THE WIND IN HIS FISTS, and BIND THE...

John Calvin Reformed

19. They were terrified. The other Evangelists explain the cause of that fear to have been, that they thought that it was an apparition, (Matthew 14:26; Mark 6:49.) Now it is impossible not to be seized with consternation and dread, when an apparition is presented before our eyes; for we conclude that it is either some imposture of Satan, or some bad omen which God sends us.