Matthew 14:23-27

And when he had sent the multitudes away, he went up into a mountain apart to pray: and when the evening was come, he was there alone.

But the ship was now in the midst of the sea, tossed with waves: for the wind was contrary.

And in the fourth watch of the night Jesus went unto them, walking on the sea.

And when the disciples saw him walking on the sea, they were troubled, saying, It is a spirit; and they cried out for fear.

But straightway Jesus spake unto them, saying, Be of good cheer; it is I; be not afraid.