When therefore they had rowed about twenty-five or thirty stadia,{25 to 30 stadia is about 5 to 6 kilometers or about 3 to 4 miles} they saw Jesus walking on the sea, and drawing near to the boat; and they were afraid.

 When he told us to eat his flesh and drink his blood, he was telling us to feed our hearts and souls and minds on his humanity, and to revitalize our lives with his life until we are filled with the life of God. 