ISB ~ Mark 14 v22

took … blessed … broke … gave:Mark uses this same language to recount Jesus’ multiplication of the loaves (6:41).See note on Mk 6:35-44. this is my body: Jesus identifies the unleavened bread of the Passover feast with his own flesh (Jn 6:51). This gift of his humanity in the sacrament is inseparable from his self-offering on the Cross (14:24; Heb 10:10), since together they constitute a single sacrifice in which Jesus is both the priest and sacrificial victim of the New Covenant (CCC 1363-65).

• Allegorically (St. Bede, In Marcum): Jesus’ actions signify the mystery of his Passion. In breaking the bread, Christ pre-enacts the breaking of his body on the Cross. Likewise as Jesus gives himself voluntarily in the Last Supper, so his Crucifixion will be a death he freely accepts, not the end result of hostile forces beyond his control. See note on Mt 26:26-29.