Likewise He also took the cup after supper, saying, “This cup is the new covenant in My blood, which is shed for you. Luke 22:20 NKJV
As the disciples gathered at the Last Supper, they thought they had come to share a traditional Passover. Everything was put in place just as it had been since the days of Moses. But when they sat down to eat; Jesus began telling them that one of them was a traitor. Imagine sitting down at Thanksgiving dinner and hearing your Dad say, “Praise God, I am thankful for this meal but I know one of you is a murderer!”? In a Passover celebration there were four cups to be drunk. The first cup Jesus took was called sanctification and this He told the disciples to share among each other because He would not drink it again until He drank it in the Kingdom of God. The next two cups were the proclamation cup, and the blessing cup, the later being most likely the one He blessed as the New Covenant in His blood. Last of all was the cup of praise which after they drank they sang a hymn and went out and followed Jesus to the garden. We do not know if Jesus drank any of the cups at the Last Supper. Our cup He blessed and gave to us so when we receive it we must be thankful. But in Gethsemane after He had prayed He took a different cup filled with bitterness and drank, so that ours could be filled with joy and eternal life!