Mark 6:48-50

48Then He saw them straining at rowing, for the wind was against them. Now about the fourth watch of the night He came to them, walking on the sea, and would have passed them by.

49And when they saw Him walking on the sea, they supposed it was a ghost, and cried out;

50for they all saw Him and were troubled. But immediately He talked with them and said to them, “Be of good cheer! It is I; do not be afraid.”