John Calvin Commentary 1 Corinthians 11:26

"For as often as ye eat this bread, and drink the cup, ye proclaim the Lord`s death till he come." — 1 Corinthians 11:26 (ASV)

For as often as ye shall eat. Paul now adds what kind of remembrance should be cherished—that is, with thanksgiving. Remembrance does not consist wholly in confession with the mouth, for the chief thing is that the efficacy of Christ’s death be sealed in our consciences. However, this knowledge should stir us up to a confession of praise, so as to declare before men what we feel inwardly before God.

The Supper then is (so to speak) a kind of memorial that must always remain in the Church until the last coming of Christ; and it has been appointed for this purpose, that Christ may remind us of the benefit of his death, and that we may recognize it before men.

This is why it is called the Eucharist. If, therefore, you would celebrate the Supper correctly, you must bear in mind that a profession of your faith is required from you. From this we see how shamelessly those who boast that they have in the mass something of the nature of the Supper mock God. For what is the mass? They confess (for I am not speaking of Papists, but of the pretended followers of Nicodemus) that it is full of abominable superstitions. By outward gesture, they feign approval of them. What kind of showing forth of the death of Christ is this? Do they not rather renounce it?

Until he come. Since we always need this kind of help as long as we are in this world, Paul intimates that this commemoration has been entrusted to us until Christ comes to judgment. For as he is not present with us in a visible form, it is necessary for us to have some symbol of his presence, by which our minds may be exercised.