King James Bible
"And the sea arose by reason of a great wind that blew."
The Sea of Galilee becomes turbulent, creating dangerous conditions for the disciples in their boat. This physical upheaval sets the stage for Jesus' miraculous intervention, as sudden storms were common on this inland sea due to its geography. John emphasizes the natural cause—a powerful wind—distinguishing this from supernatural disturbance. The detail heightens the disciples' peril and underscores their human vulnerability before Jesus walks on water to reach them.