As the new believers were added to the first century Church, they gathered together weekly to worship the Lord Jesus Christ. They gathered weekly to proclaim His death. Believers keep this memorial service in honor of our Lord's request. They gather around bread and wine in a meeting that the early Christians called the “Lord’s Supper” (Corinthians 11:20) or the “Breaking of Bread” (Acts 2:42). Believers have practiced this through out the years, because the Lord Jesus commanded us to observe it:

And when He had taken some bread and given thanks, He broke it, and gave it to them, saying, “This is My body which is given for you; do this in remembrance of Me.” And in the same way He took the cup after they had eaten, saying, “This cup which is poured out for you is the new covenant in My blood.” – - Luke 22:19-20

The Lord gave instructions for The Lord's Supper. He instituted the use of the bread and wine which was symbolized His body and blood. When the bread is broken, it represents the Lord's body that was broken for you and me. We use one loaf, because it symbolizes that there is one body. (1 Corinthians 10:17) The wine represents the blood of the the Lord Jesus which was shed for each one of us. (Matthew 26:28)