In the gospel narratives we read of Jesus doing a lot of things that we should do. In summary: he loves God and others perfectly. This is the type of person we were created to be.
At the same time we read of Jesus doing things that only God could do. He heals, creates food, creates limbs, raises the dead, muzzles Satan, and forgives sin. Only God can do these things.
When Jesus walked on the water (Mark 6.45-52) he walked where only God can walk. In Job 9 we read of God treading upon the waves of the sea (Job 9.8). Only God, only Jesus could walk on the water.
Further, in these gospels we read of Jesus walking the lonely walk to Golgotha. As he was bearing his cross he was bearing my shame. He drank dry the eternal vat of divine wrath that was to be poured out on my head. In his death he hushed the Law’s loud thunder, he has quenched Mt. Sinai’s flame. His walk, his incarnation, his entire ministry was a redemptive. He lived and died for a sinner like me. And only Jesus could make that walk; only he could walk there. He is the only one who is eligible and willing to be my substitute. He is the only acceptable mediator that we might cling to. He is the only basis for righteousness, life, and peace. He alone could make that walk, for me and for God.
So when I, in my mind’s eye, see Jesus walk upon the waters of the Sea of Galilee, I am reminded of the uniqueness and beauty of God in Christ. Jesus walked where only God could walk. He did what only God could do. He did what we could not and would not do. He is the Redeemer. He is my Redeemer. And he bids us to cherish him with humble, happy delight.