The Lord's Supper was the point of transition between two great festivals—The symbols of the Lord's house are simple and plainly understood, and the truths represented by them are of the deepest significance to us. In instituting the sacramental service to take the place of the Passover, Christ left for His church a memorial of His great sacrifice for man. “This do,” He said, “in remembrance of Me.” This was the point of transition between two economies and their two great festivals. The one was to close forever; the other, which He had just established, was to take its place, and to continue through all time as the memorial of His death.—The Review and Herald, May 31, 1898. PaM 169.1
Members should not exclude themselves from Communion because some present are unworthy—None should exclude themselves from the communion because some who are unworthy may be present. Every disciple is called upon to participate publicly, and thus bear witness that he accepts Christ as a personal Saviour. It is at these, His own appointments, that Christ meets His people, and energizes them by His presence. Hearts and hands that are unworthy may even administer the ordinance, yet Christ is there to minister to His children. All who come with their faith fixed upon Him will be greatly blessed. All who neglect these seasons of divine privilege will suffer loss. Of them it may appropriately be said, “Ye are not all clean.”—The Desire of Ages, 656. PaM 169.2
Only open sin excludes persons from the Lord's Supper—Christ's example forbids exclusiveness at the Lord's supper. It is true that open sin excludes the guilty. This the Holy Spirit plainly teaches. But beyond this none are to pass judgment. God has not left it with men to say who shall present themselves on these occasions. For who can read the heart? Who can distinguish the tares from the wheat? “Let a man examine himself, and so let him eat of that bread, and drink of that cup.” For “whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.” “He that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body.”—The Desire of Ages, 656. PaM 169.3
The Lord's Supper is not to be observed only occasionally or yearly—The salvation of men depends upon a continual application to their hearts of the cleansing blood of Christ. Therefore, the Lord's Supper was not to be observed only occasionally or yearly, but more frequently than the annual passover. This solemn ordinance commemorates a far greater event than the deliverance of the children of Israel from Egypt. That deliverance was typical of the great atonement which Christ made by the sacrifice of His own life for the final deliverance of His people.—The S.D.A. Bible Commentary 6:1090. PaM 170.1