Mark’s account of Jesus walking on water showed that he did not intend for his disciples to know what he was doing. Mark said, “about the fourth watch of the night he cometh unto them, walking upon the sea, and would have passed by them” (Mark 6:48). It appears that Jesus’ intention was only to get to the other side of the sea ahead of his disciples. “But when they saw him walking upon the sea, they supposed it had been a spirit, and cried out: for they all saw him, and were troubled. And immediately he talked with them, and saith unto them, Be of good cheer: it is I; be not afraid” (Mark 6:49-50). Apparently, Jesus had transformed himself into a form that may have been somewhat ghostlike or transparent. A clue as to what this form was like can be found in John 6:19 where it states the disciples saw Jesus “walking on the sea, and drawing nigh unto the ship: and they were afraid.” The Greek term translated drawing, ginomai (ghin’-om-ahee) means “to cause to be (generate) that is (reflexively) to become (come into being)” (1096). What may have happened was that Jesus transformed himself back into a physical state because his disciples were fearful he was dead when they saw him walking across the sea as a spirit.
Whether or not Jesus walked across the sea of Galilee in a spiritual or physical state is not completely clear, but it is evident that at the time when Jesus arrived at the boat in which his disciples were traveling, he appeared to be normal as he stood upon the water talking to them. His salutation, “Be of good cheer: it is I; be not afraid” (Mark 6:50) suggested that Jesus was calming the disciples and making them aware that everything was fine. It was at this point that Peter spoke up and said, “If it be thou, bid me come unto thee on the water” (Matthew 14:28). Essentially, Peter’s remark was a confession of faith. Another way of stating what Peter said would be, “because it is you, bid me come unto thee on the water.” In other words, Peter wanted to do what he saw Jesus was able to. Perhaps, Peter thought it would be cool to walk on the water, or he may have been trying to impress Jesus with his exuberant act of faith, but Matthew said, when Peter “saw the wind boysterous, he was afraid” (Matthew 14:30). The difference between Jesus walking on water and Peter walking on water was that Peter didn’t have authority over the wind as Jesus did. Peter’s disadvantage was that he couldn’t keep the wind from knocking him around; and he was most likely fearful because once he was out of the boat, he realized the wind’s powerful force could cause him to crash into the water like a tomato on a hardwood floor. Matthew tells us that Peter began to sink and cried out to Jesus, saying, “Lord, save me” (Matthew 14:30), meaning, he acknowledged Jesus’ deity and his ability to do more than Peter was able to.