The Lord’s Supper symbolizes our acceptance of the body and blood of Jesus, spilled and broken for us. By searching our hearts and washing one another’s feet, we remember Jesus’ humble example of service.
The Lord’s Supper is a participation in the emblems of the body and blood of Jesus as an expression of faith in Him, our Lord and Saviour. In this experience of communion Christ is present to meet and strengthen His people. As we partake, we joyfully proclaim the Lord’s death until He comes again. Preparation for the Supper includes self-examination, repentance, and confession. The Master ordained the service of foot-washing to signify renewed cleansing, to express a willingness to serve one another in Christlike humility, and to unite our hearts in love. The communion service is open to all believing Christians. (Matt. 26:17-30; John 6:48-63; 13:1-17; 1 Cor. 10:16, 17; 11:23-30; Rev. 3:20.)
Source: www.adventist.org