John 6:15-21 — 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.
And when even was now come, His disciples went down unto the sea,
And entered into a ship, and went over the sea toward Capernaum. And it was now dark, and Jesus was not come to them.
And the sea arose by reason of a great wind that blew.
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.
But He saith unto them, It is I; be not afraid.
Then they willingly received Him into the ship: and immediately the ship was at the land whither they went.
a king — not "the" King. They wanted Him to lead a revolt against Roman rule.
Scripture says God would enthrone Him after He died.
25-30 furlongs — approximately three miles, or halfway across the seven-mile-wide lake.
a second miracle (verse 21) — the boat was immediately at shore.