So when they had rowed about three or four miles, they saw Jesus walking on the sea and drawing near the boat; and they were afraid. But He said to them, “It is I; do not be afraid.” Then they willingly received Him into the boat, and immediately the boat was at the land where they were going.(John 6:19-21) NKJV
John Chapter 6 describes Jesus walking on water (v. 16-21) which is described in the other gospels as happening during a tempest. Jesus physically demonstrates his power over matter and energy.
Everyone who preaches on this text emphasis’s how it demonstrates Jesus’ divine nature because he showed that he has power over nature. It’s not an issue. What we want to do that may be slightly different is to see what we can deduce about what this power is and how did he do it.
In a way it’s not really necessary to know the details. That’s what faith is for. On the other hand, we find time and time again that pulling on these threads to see how far they go produces results which enhance and deepen our understanding of the relationship between the Word of God and the creation around us.
There’s more here than meets the eye. It’s Hypothesis 37.