The disciples had forgotten to take any food and they had only one loaf with them in the boat. Then he gave them this warning, ‘Keep your eyes open; be on your guard against the yeast of the Pharisees and the yeast of Herod.’ And they said to one another, ‘It is because we have no bread.’ And Jesus knew it, and he said to them, ‘Why are you talking about having no bread? Do you not yet understand? Have you no perception? Are your minds closed? Have you eyes that do not see, ears that do not hear? Or do you not remember? When I broke the five loaves among the five thousand, how many baskets full of scraps did you collect?’ They answered, ‘Twelve.’ ‘And when I broke the seven loaves for the four thousand, how many baskets full of scraps did you collect?’ And they answered, ‘Seven.’ Then he said to them, ‘Are you still without perception?’
Source: Jerusalem Bible
Catechism of the Catholic Church
WHAT IS THIS SACRAMENT CALLED?
1328 The inexhaustible richness of this sacrament is expressed in the different names we give it. Each name evokes certain aspects of it. It is called:
Eucharist, because it is an action of thanksgiving to God. The Greek words eucharistein and eulogein recall the Jewish blessings that proclaim – especially during a meal – God’s works: creation, redemption, and sanctification.
1329 The Lord’s Supper, because of its connection with the supper which the Lord took with his disciples on the eve of his Passion and because it anticipates the wedding feast of the Lamb in the heavenly Jerusalem.
The Breaking of Bread, because Jesus used this rite, part of a Jewish meat when as master of the table he blessed and distributed the bread, above all at the Last Supper. It is by this action that his disciples will recognize him after his Resurrection, and it is this expression that the first Christians will use to designate their Eucharistic assemblies; by doing so they signified that all who eat the one broken bread, Christ, enter into communion with him and form but one body in him.
The Eucharistic assembly (synaxis), because the Eucharist is celebrated amid the assembly of the faithful, the visible expression of the Church.
The LORD is king, robed with majesty; the LORD is robed, girded with might. The world will surely stand in place, never to be moved.
Your throne stands firm from of old; you are from everlasting, LORD.
The flood has raised up, LORD; the flood has raised up its roar; the flood has raised its pounding waves.
More powerful than the roar of many waters, more powerful than the breakers of the sea, powerful in the heavens is the LORD.
Your decrees are firmly established; holiness belongs to your house, LORD, for all the length of days.
Source: The New American Bible