John 6:16-21 NIV

When evening came, his disciples went down to the lake, [17] where they got into a boat and set off across the lake for Capernaum. By now it was dark, and Jesus had not yet joined them. [18] A strong wind was blowing and the waters grew rough. [19] When they had rowed about three or four miles, they saw Jesus approaching the boat, walking on the water; and they were frightened. [20] But he said to them, "It is I; don't be afraid." [21] Then they were willing to take him into the boat, and immediately the boat reached the shore where they were heading.