What is the meaning of the Lord's Supper? It's in the Bible, Matthew 26:26-28, NIV. "While they were eating, Jesus took bread, gave thanks and broke it, and gave it to His disciples, saying, 'Take eat; this is my body.' Then He took the cup, gave thanks and offered it to them, saying, 'Drink from it, all of you. This is My blood of the covenant, which is poured out for many for the forgiveness of sins."
The Lord's Supper reminds us that Christ died for us. It's in the Bible, I Corinthians 11:26, TLB. "For every time you eat this bread and drink this cup you are re-telling the message of the Lord's death, that He has died for you. Do this until He comes again."