Mark 6:48-50

48He saw the disciples straining at the oars, because the wind was against them. Shortly before dawn he went out to them, walking on the lake. He was about to pass by them, 49but when they saw him walking on the lake, they thought he was a ghost. They cried out,

50because they all saw him and were terrified. Immediately he spoke to them and said, “Take courage! It is I. Don’t be afraid.”