I was about to go to bed when this came in from Steve. John Calvin on Colossians 2.12:

When he says that we are buried with Christ, this means more than that we are crucified with him; for burial expresses a continued process of mortification. When he says, that this is done through means of baptism, as he says also in Romans 6:4, he speaks in his usual manner, ascribing efficacy to the sacrament, that it may not fruitlessly signify what does not exist. By baptism, therefore, we are buried with Christ, because Christ does at the same time accomplish efficaciously that mortification, which he there represents, that the reality may be conjoined with the sign.

It has been awhile but this sounded really familiar. Here is Calvin in his Short Treatise on the Lord’s Supper (subheads 10 and 11):

We can therefore say, that in it the Lord displays to us all the treasures of his spiritual grace, inasmuch as he associates us in all the blessings and riches of our Lord Jesus. Let us recollect, then, that the Supper is given us as a mirror in which we may contemplate Jesus Christ crucified in order to deliver us from condemnation, and raised again in. order to procure for us righteousness and eternal life. It is indeed true that this same grace is offered us by the gospel, yet as in the Supper we have more ample certainty, and fuller enjoyment of it, with good cause do we recognise this fruit as coming from it.

But as the blessings of Jesus Christ do not belong to us at all, unless he be previously ours, it is necessary, first of all, that he be given us in the Supper, in order that the things which we have mentioned may be truly accomplished in us. For this reason I am wont to say, that the substance of the sacraments is the Lord Jesus, and the efficacy of them the graces and blessings which we have by his means. Now the efficacy of the Supper is to confirm to us the reconciliation which we have with God through our Saviour’s death and passion; the washing of our souls which we have in the shedding of his blood; the righteousness which we have in his obedience; in short, the hope of salvation which we have in all that he has done for us. It is necessary, then, that the substance should be conjoined with these, otherwise nothing would be firm or certain. Hence we conclude that two things are presented to us in the Supper, viz., Jesus Christ as the source and substance of all good; and, secondly, the fruit and efficacy of his death and passion. This is implied in the words which were used. For after commanding us to eat his body and drink his blood, he adds that his body was delivered for us, and his blood shed for the remission of our sins. Hereby he intimates, first, that we ought not simply to communicate in his body and blood, without any other consideration, but in order to receive the fruit derived to us from his death and passion; secondly, that we can attain the enjoyment of such fruit only by participating in his body and blood, from which it is derived.

The word, “conjoin,” was the one that prompted my memory. Notice how completely consistent these two statements are. God, in the sacraments, confirms the promises by conjoining their substance with them. Calvin’s language is the same for both baptism and the Lord’s Supper.

Here is something similar regarding baptism, from John Calvin’s “Catechism of the Church of Geneva.”

Master. – Do you think that the water is a washing of the soul?

Scholar. – By no means; for it were impious to snatch away this honour from the blood of Christ, which was shed in order to wipe away all our stains, and render us pure and unpolluted in the sight of God. (1 Pet. i. 19; 1 John i. 7.) And we receive the fruit of this cleansing when the Holy Spirit sprinkles our consciences with that sacred blood. Of this we have a seal in the Sacrament.

Master. – But do you attribute nothing more to the water than that it is a figure of ablution?

Scholar. – I understand it to be a figure, but still so that the reality is annexed to it; for God does not disappoint us when he promises us his gifts. Accordingly, it is certain that both pardon of sins and newness of life are offered to us in baptism, and received by us.

So conjoined and annexed are for the sacraments just like stacked is for the committee.