This post is addressed to benjohnson, steido01 and whoever else is interested. This is what the Formula of Concord has to say.
Dr. Luther, who, above others, certainly understood the true and proper meaning of the Augsburg Confession, and who constantly remained steadfast thereto till his end, and defended it, shortly before his death repeated his faith concerning this article with great zeal in his last Confession, where he writes thus: I rate as one concoction, namely, as Sacramentarians and fanatics, which they also are, all who will not believe that the Lord’s bread in the Supper is His true natural body, which the godless or Judas received with the mouth, as well as did St. Peter and all [other] saints; he who will not believe this (I say) should let me alone, and hope for no fellowship with me; this is not going to be altered [thus my opinion stands, which I am not going to change]. Tom. 2, Wittenb., German, fol. 252.
From these explanations, and especially from that of Dr. Luther as the leading teacher of the Augsburg Confession, every intelligent man who loves truth and peace, can undoubtedly perceive what has always been the proper meaning and understanding of the Augsburg Confession in regard to this article.
bookofconcord.org/sd-supper.php#para34
Okay, so according to the Formula of Concord, the meaning of the eucharistic doctrine of the Augsburg Confession is the same as the interpretation given by Martin Luther. Of course, Dr. Luther maintained, contrary to transubstantiation, that the substance of bread and wine remain in the sacrament. He writes in the Smalcald Articles,
As regards transubstantiation, we care nothing about the sophistical subtlety by which they teach that bread and wine leave or lose their own natural substance, and that there remain only the appearance and color of bread, and not true bread. For it is in perfect agreement with Holy Scriptures that there is, and remains, bread, as Paul himself calls it, 1 Cor. 10:16: The bread which we break. And 1 Cor. 11:28: Let him so eat of that bread.
bookofconcord.org/smalcald.php#part3.6.5
Okay, so transubstantiation is that Christ remains under the appearance of bread and wine, though what is present is no longer bread and wine. Luther’s teaching is that Christ is present together with the bread and wine, which remain substantially bread and wine, which he argues from 1 Cor. This is the context of the Formula of Concord. The Formula of Concord goes on to repeat this same teaching in greater detail.
35] For the reason why, in addition to the expressions of Christ and St. Paul (the bread in the Supper is the body of Christ or the communion of the body of Christ), also the forms: under the bread, with the bread, in the bread [the body of Christ is present and offered], are employed, is that by means of them the papistical transubstantiation may be rejected and the sacramental union of the
unchanged essence of the bread and of the body of Christ indicated; 36] just as the expression, Verbum caro factum est, The Word was made flesh John 1:14 ], is repeated and explained by the equivalent expressions: The Word dwelt among us; likewise Col 2:9 ]: In Him dwelleth all the fulness of the Godhead bodily; likewise Acts 10:38 ]: God was with Him; likewise 2 Cor. 5:19 ]: God was in Christ, and the like; namely, that the divine essence is not changed into the human nature, but the two natures, unchanged, are personally united. [These phrases repeat and declare the expression of John, above mentioned, namely, that by the incarnation the divine essence is not changed into the human nature, but that the two natures without confusion are personally united.] 37] Even as many eminent ancient teachers, Justin, Cyprian, Augustine, Leo, Gelasius, Chrysostom and others, use this simile concerning the words of Christ’s testament: This is My body, that just as in Christ two distinct, unchanged natures are inseparably united, so in the Holy Supper
the two substances, the natural bread and the true natural body of Christ, are present together here upon earth in the appointed administration of the Sacrament.
bookofconcord.org/sd-supper.php#para35
Okay, so they explicitly say that the
“two substances” (their exact words) of bread and wine are present together in the sacrament. They are not saying, “unlike those stupid papist asses, we refuse to define the manner of Christ’s presence in the sacrament.” No, they explicitly state that the two
substances are present
together. This is the very definition of consubstantiation! Now, if you don’t want to use the term consubstantiation, that is fine by me, but the doctrine of sacramental union has the same meaning. The substance of Christ’s body is present with the substance of bread, in direct contradiction to transubstantiation.