The miracle of the walking on water is best understood in the context of the previous miracle. The feeding of the 5000 would have reminded the disciples of Moses and the Exodus. The miracle of the walking on water would have reminded them of the climax to the Exodus - Joshua and the conquest of the land of Canaan. After wandering for 40 years in the wilderness Moses led the Israelites to the eastern shores of the river Jordan to prepare for the conquest. But Moses died on Mt Nebo before he could begin the invasion. His mission was accomplished by his right man Joshua.
In Romans, we learn that Jesus’ ancestors were Israelites. Some of their names were copied from 1 Chronicles onto that mosaic floor. We also learn in Romans that Jesus is more than human. He is God, “forever praised!” In Hebrews, we read about great men of faith. These people trusted God for deliverance from worldly troubles and for eternal salvation. Notice that Moses, who lived about 1500 years before Christ, “looked forward” and placed his faith specifically “in Christ.” Notice also Daniel’s faith that God would rescue him from the lions and Shadrach, Meshach, and Abednego’s faith that God would rescue them from the flames.
But here is the mystery: the very moment that He leaves us, He returns: “I am going away” to the Father; but He added immediately “and coming back to you.” And in Matthew’s Gospel, He told them, “Behold I am with you all the days that are coming, till the consummation of the world.” And the one statement is made true by the other. He went away from us, His body also, to Heaven, to the pure and open presence of His Father which He has directed toward us. He who was the intermediary between the Father and us — “the way, the truth and the life” — has entered completely into this love. Now He is everywhere the Father’s love is, and so He is with us. He is gone from the visible, transient here and now. But now, from there, and because He is there, He can, through the love of the Father, be with each of us and with the Father also. He is within us, closing in upon us, bringing with Him the presence of the Father, Heaven.