John 6:16-21 concerns the day Jesus walked on water to his disciples out in a boat. After the feeding of the 5,000 with two fish and five loaves of bread, John records this miracle as further proof of Jesus’ claim to be the Son of God and to show the concern Jesus had for his disciples. He not only prayed for them, but came to them and the water before him was no obstacle. The believer who grasps on to this and hears His voice saying, ‘It is I, do not be afraid’ whenever they face suffering and trial, will find this a great comfort.