Melchizedek substituted sacrifice of flesh and blood for a sacrament of bread and wine. 
The desert temptation to command stones to become loaves was really just a doubt that Jesus had about how to obtain food and whether he would allow himself to use his powers to do so.  Jesus performed the miracle of feeding five thousand people using five barley loaves and two fish.  Jesus said: “If the child needs a loaf, will you give him a stone just because he unwisely asks for it?  In the parable of the rich and the poor Lazarus desired Dives feed him with the crumbs.  Jesus quoted: “Man shall not live by bread alone but by every word that proceeds from the mouth of God. ”. 
Norana, the phoenician woman that insisted in seeing Jesus, said to the apostles not to deprive dogs of crumbs which chance to fall from the children’s table.  Jesus used the bread in the parable of the three loaves. 
The eternal word of God is indeed the bread of life; Jesus’ life in the flesh is a bestowal of the bread of heaven.  The bread of life and the water thereof are given only to those who hunger for truth and thirst for righteousness—for God. 
At Messina Jesus and his companions stopped for only one day, but that was long enough to change the life of a small boy, a fruit vendor, of whom Jesus bought fruit and in turn fed with the bread of life.  Jesus is the bread of life, and he is the united life of the Father and the Son in one gift.  The prophets of the seed of Abraham will sit down with the believers of the gentile nations in the glorified kingdom to partake of the bread of life. 
Jesus was the starter of the custom to celebrate Passover using only unleavened bread and wine, and these emblems were termed “the bread of life” and “the water of life” by Jesus.  Jesus is the living bread, and every soul who attains the realization of this united nature of God and man shall live forever.  The world is filled with hungry souls who famish in the very presence of the bread of life; men die searching for the very God who lives within them. 
During the last supper with the apostles Jesus called the bread the bread of remembrance, the symbol of the living word of truth incarnated in the likeness of mortal flesh.