Our Lord Jesus Christ came to save us. He lived with us and was sacrificed on the cross for our salvation to pay the penalty for our sin. On the last night before he went to the cross, Jesus and his disciples gathered together for the Jewish Passover meal. Jesus Christ commanded his disciples to take part and eat. When he broke the bread he said: “This is my body.”
Then he picked up the cup and after giving thanks, he gave it to the disciples. And he said, "Drink this all of you. This symbolizes my blood that will be shed for you."
It is the blood of Christ that fulfills the requirement of the Law (Shariat)
The Lord's Supper is a reminder of our covenant with Jesus Christ.