For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread, and when he had given thanks, he broke it, and said, “This is my body which is for you. Do this in remembrance of me.” In the same way also he took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.” For as often as you eat this bread and drink the cup, you proclaim the Lord’s death until he comes.
Jesus gave thanks for the meal that would symbolize his death. He came to lay down his life for you and me. The bread represents his body that died and the cup represents his life (his blood) that he gave up for us. The blood he shed is the institution of the covenant (cf. Jeremiah 31). As we take the Lord’s Supper, we are reminding ourselves we are in the new covenant, not the old. We are under the law of Christ, the law of love. We know Jesus died for the sins of the whole world, and he is coming back again. It’s not just crackers and juice, it is a remembrance of the gospel. Let’s invite and bring people to witness our remembrance. What a great opportunity to proclaim the gospel.