William Burkitt on John 6:1

Observe here, How busy and industrious our holy Lord was about his Father's work, both on the sea and on the land, both by night and by day; His meat was to do the will of him that sent him, and to finish his work; some have enquired into the reason why Christ travelled by sea, as well as by land; and they seem to be these;

1. To shew what his intent was in making the sea; namely to be sailed upon, as the land was made to be walked upon.

2. That Christ might take occasion to manifest his deity, in working miracles upon the sea, as well as upon the land.

3. Might it not be to comfort and encourage sea-faring men that dwell much upon the waters, in the midst of their distresses, to trust in and pray to such a Saviour, as had himself an experimental knowledge of the dangers of the sea?

Some have farther observed, That after our Saviour's resurrection, we never hear of his sailing upon the seas more; for such a turbulent condition, which necessarily attends sea voyages, was utterly inconsistent with the stability and perpetuity of Christ's state, when he was risen from the dead; the firm land better agreeing with his fixed estate, than the fluctuating water.