Every one that is clean shall eat thereof. - Leviticus 7:19 (R. V.)
In - Leviticus 7:13, it is admitted that leaven must be present in this holy feast, inasmuch as it stands for the essential principle of evil, which intrudes into our holiest worship. The self-life is an all-pervasive leaven. We may not be conscious of it; there may be no sufficient recognition of its distastefulness to the holy God: but it follows us even into the Holy place.
The worshipper was not allowed, however, to be knowingly unclean. There must be no stain on the conscience, which he might remove by confession and repentance. If there were, he must be cut off; that is, he must be debarred from all participation in holy rites, and suspended from entering the sacred enclosure of the Tabernacle.
This cutting off answers to the suspension of a believer's communion with God, because of unconfessed sin. The presence of the leaven of the self-life is no barrier to the enjoyment of the Divine fellowship, for we meet God in Jesus. But permitted sin makes such fellowship impossible, because we have not availed ourselves of the gracious arrangements made by God for the perpetual cleansing of the soul in the precious blood of Jesus Christ. For "it is the blood that maketh an atonement for the soul."
How many excommunicate Christians there are! You can easily see that they have been cut off; their joyless faces and powerless prayers,- their inability to bear testimony for God - all tell the sad story. If you have been cut off, search your past history to discover the cause. Put away your sin, and seek the blessed cleansing of John 13.; then come to feast with God, in holy communion, as at a common table.