Luke 22:20 – In the same way, after the supper he took the cup, saying, “This cup is the new covenant in my blood, which is poured out for you.
The Lord’s supper is a sign or memorial of Christ already come, who died on cross and delivered us. The breaking of Christ’s body as a sacrifice for us, is therein brought to our remembrance by the breaking of bread.
Nothing can be more nourishing and satisfying to the soul, than the doctrine of Christ’s making atonement for sin, and the assurance of an interest in that atonement. Therefore, we do this in remembrance of what He did for us, when he died for us; and for a memorial of what we do, in joining ourselves to him in an everlasting covenant. The shedding of Christ’s blood, by which the atonement was made, is represented by the wine in the cup.
This meal was the beginning of his Passion — his journey to the cross in obedience to his Father’s will. What lay ahead of him was a horrible ordeal involving great suffering, humiliating rejection, and the anguish of abandonment by his friends. This meal was Jesus’ last with his earthly disciples before his passion — the great suffering he endured during his betrayal, arrest, abandonment, trials, and crucifixion. Jesus wanted to use this time to prepare his disciples for all that was ahead. In addition, he anticipated sharing in another meal with his disciples at the fulfillment of the Kingdom after his death. He gave a sense of hope for them to reflect upon after the worst had come.
As host of the meal, Jesus begins to speak the ancient words of the Passover meal, telling of Israel’s Exodus from Egypt by God’s strong hand. For Jesus, this Passover meal looks forward to its fulfillment in the Great Feast in the Kingdom of God at the End Time.
The past is forgiven, the future is ours — a new promise for us, a new covenant.