Charles Spurgeon Commentary John 6:19

"When therefore they had rowed about five and twenty or thirty furlongs, they behold Jesus walking on the sea, and drawing nigh unto the boat: and they were afraid." — John 6:19 (ASV)

So when they had rowed about five and twenty or thirty furlongs, they see Jesus–

Here he is. Here is the first of their blessings. The first mischief is removed, and the rest will soon go. They see Jesus.

Walking on the sea

Oh, what a sight! A grander sight than to see him on the land; and it is a more glorious sight to see Christ in the time of trouble than it is in the time of prosperity. He is always sweet, but he is more marvelous when they see Jesus walking on the sea.

And drawing nigh unto the ship: and they were afraid.

Afraid of their best friend – trembling at their deliverer.