Scripture: Matthew 7:6;Acts 2:42;1 Corinthians 5:4; Romans16:17, Page 156 to 165 are covered. "Open communion turns the Church into a pig pen" - quote by Martin Luther. Word,Absolution and Baptism are standard means of grace. The Lord's Supper sacrament comes with a warning, so it is different. Reasons for closed communion are discussed against the trend towards open communion in the Church.