The Bible and Lutherans teach that Holy Communion is a holy act instituted by Christ. Together with bread and wine we receive Jesus' true body and blood. In this special meal Jesus gives the forgiveness of sins, strengthens our faith, and gives eternal salvation to all who believe. Only people who repent of their sins and receive proper instruction in the Christian faith should be admitted to this sacrament.
Matthew 26:26-28
Jesus took bread, gave thanks and broke it, and gave it to his disciples, saying, "Take and 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."
1 Corinthians 10:16
Is not the cup of thanksgiving for which we give thanks a participation in the blood of Christ? And is not the bread that we break a participation in the body of Christ?
1 Corinthians 11:27,28
Whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord. A man ought to examine himself before be eats of the bread and drinks of the cup.
1 Corinthians 10:17
We, who are many, are one body, for we all partake of the one loaf.