This is My blood of the covenant, which is poured out for many for the forgiveness of sins.
But I say unto you, I will not drink henceforth,.... From whence it seems natural to conclude, that Christ had drank of the cup in the supper, as well as at the passover; and it is reasonable to believe, that he also ate of the bread; since it appears from what has been observed before; see Gill on Mat 26:26, that none might eat, till...
Verse 28. For this is my blood. This represents my blood: as the bread did his body. Luke and Paul vary the expression, adding what Matthew and Mark have omitted. "This cup is the new testament in my blood." By this cup, he meant the wine in the cup, and not the cup itself.
For this is my blood of the new testament, which is shed for many for the remission of sins. (o) That is, this cup or wine is my blood sacramentally, as inGeneva "Lu 22:20". (p) Or covenant, that is to say, by which the new league and covenant is made, for in the making of leagues they used the pouring of wine and shedding of blood.