What is the Lord's supper?

The Lord’s supper is a sacrament of the New Testament,[1] wherein, by giving and receiving bread and wine according to the appointment of Jesus Christ, his death is showed forth; and they that worthily communicate feed upon his body and blood, to their spiritual nourishment and growth in grace;[2] have their union and communion with him confirmed;[3] testify and renew their thankfulness,[4] and engagement to God,[5] and their mutual love and fellowship each with other, as members of the same mystical body.[6]