If you visit on a Sunday morning, the Lord’s Supper will be included in the worship proceedings for baptized believers – because the churches of Christ observe this memorial every Sunday.
Again, the reason for this is our desire to follow New Testament teaching. The first century church celebrated this observance on the first day of the week. We assume from this that they did it the first day of every week. And we know from respected historians that in early centuries the Lord’s Supper was an every-Sunday commemoration.
During this memorial, plates containing pieces of unleavened bread will be passed throughout the congregation. The bread symbolizes the body of Jesus. Each participating person will break off a piece of bread and eat it, remembering Jesus' body that He laid down as the perfect sacrifice for our sins.
Next, trays filled with small cups will be distributed. The cups contain the “fruit of the vine,” usually grape juice, symbolizing the blood Jesus shed to make atonement on our behalf. Each participant will drink the contents of one of the cups, remembering Jesus' death, burial, and resurrection.
If you chose not to participate, don’t be embarrassed. Feel free to just pass the plate or tray to the person next to you.