From LDS Worship - Part I (Brad - By Common Consent) - Excerpted part by Neal Kramer:
At the appointed time, young men stand before the sacrament table, the symbol of the table on which our Master’s body lay while in the tomb. These young men stand as witnesses of his resurrection. They are symbolic of the angels who announced, “He is not here. He is risen.” In sober respect, these young men remove the symbolic burial clothes. The clothes reveal the Lord’s absence and His presence in the emblems. Other young men, members of a quorum of as many as twelve members, represent the disciples, emissaries, yes the Apostles, of the Lord. They bring us the holy, blessed emblems of His death and invite us to partake. As we accept the emblems and partake, we bear witness to all present that we desire to remain bound to Christ, in reverence of that sacred holy offering. The symbols bring us in spirit before the angels and disciples. We accept their news and their gifts, in remembrance of Him. Our hearts are filled with sober joy and the hope of peace.
So our worship freely binds us to the Lord. We humbly present ourselves before him and in silent adoration, awe, and love partake. Our worship at least begins and renews itself this way each week. It is simple and profound. We are cleansed. We love him with all our hearts, which He has made clean and pure.