Matthew 26:26

As they were eating, Jesus took bread] This may correspond with No. 7, but it seems more probable that both the bread and the wine were consecrated together at the close of the meal, the bread when it was.almost, and the cup when it was quite, finished.

The Jewish ritual of breaking the Passover bread was as follows: 'Then washing his hands, and taking two loaves, he breaks one, and lays the broken loaf upon the whole one, saying, “Blessed be He who causeth bread to grow out of the earth.” Then, putting a piece of bread and some bitter herbs together, he dips them in the sour broth, saying this blessing: “Blessed be Thou, O Lord God, our eternal King, He who hath sanctified us by His precepts, and commanded us to eat.” Then he eats the unleavened bread and bitter herbs together.' But it is unlikely that Jesus, who was founding a new rite, followed the Jewish ritual in every detail.

This is my body] see on Matthew 26:30.