"And since even in the ancient Christian teachers of the Church, as well as in some among our teachers, dissimilar explanations of the article concerning the descent of Christ to hell are found, we abide in like manner by the simplicity of our Christian faith [comprised in the Creed], to which Dr. Luther in his sermon, which was delivered in the castle at Torgau in the year 1533, concerning the descent of Christ to hell, has pointed us, where we confess: I believe in the Lord Christ, God's Son, our Lord, dead, buried, and descended into hell. For in this [Confession] the burial and descent of Christ to hell are distinguished as different articles; and we simply believe that the entire person, God and man, after the burial descended into hell, conquered the devil, destroyed the power of hell, and took from the devil all his might. We should not, however, trouble ourselves with high and acute thoughts as to how this occurred; for with our reason and our five senses this article can be comprehended as little as the preceding one, how Christ is placed at the right hand of the almighty power and majesty of God; but we are simply to believe it and adhere to the Word [in such mysteries of faith]. Thus we retain the substance [sound doctrine] and [true] consolation that neither hell nor the devil can take captive or injure us and all who believe in Christ."
Formula of Concord, Solid Declaration, Art. IX Christ’s Descent To Hell
Luther's sermon at Torgau graphically describes the descent as a triumphant march of our victorious Savior into the stronghold of the dismayed infernal hosts. From it we quote the following: "Before Christ arose and ascended into heaven, and while yet Iying in the grave, He also descended into hell in order to deliver also us from it, who were to be held in it as prisoners ... However I shall not discuss this article in a profound and subtle manner, as to how it was done or what it means to 'descend into hell,' but adhere to the simplest meaning conveyed by these words, as we must represent it to children and uneducated people.""Therefore whoever would not go wrong or stumble had best adhere to the words and understand them in a simple way as well as he can. Accordingly, it is customary to represent Christ in paintings on walls, as He descends, appears before hell, clad in a priestly robe and with a banner in His hand, with which He beats the devil and puts him to flight, takes hell by storm, and rescues those that are His. Thus it was also acted the night before Easter as a play for children. And I am well pleased with the fact that it is painted, played, sung and said in this manner for the benefit of simple people.We, too, should let it go at that, and not trouble ourselves with profound and subtle thoughts as to how it may have happened, since it surely did not occur bodily inasmuch as He remained in the grave three days."
Luther continues: "However since we cannot but conceive thoughts and images of what is presented to us in words, and unable to think of or understand anything without such images, it is appropriate and right that we view it literally, just as it is painted, that He descends with the banner, shattering and destroying the gates of hell; and we should put aside thoughts that are too deep and incomprehensible for us." "But we ought ... simply to fix and fasten our hearts and thoughts on the words of the Creed,which says:'I believe in the Lord Jesus Christ, the Son of God,dead,buried, and descended into hell,' that is, in the entire person,God and man, with body and soul, undivided, 'born of the Virgin, suffered died, and buried'; in like manner I must not divide it here either, but believe and say that the same Christ, God and man in one person, descended into hell but did not remain in it; as Ps. 16, 10 says ofHim: 'Thou wilt not leave My soul in hell nor suffer Thine Holy One to see corruption.' By the word 'soul,' He, in accordance with the language of the Scripture, does not mean, as we do, a being separated from the body, but the entire man, the Holy One of God, as He here calls Himself. But how it may have occurred that the man lies there in the grave, and yet descends into hell-that, indeed, we shall and must leave unexplained and uncomprehended; for it certainly did not take place in a bodily and tangible manner although we can only paint and conceive it in a coarse and bodily way and speak of it in pictures." "Such, therefore is the plainest manner to speak of this article, that we may adhere to the words and cling to this main point, that for us, through Christ, hell has been torn to pieces and the devil's kingdom and power utterly destroyed, for which purpose He died, was buried, and descended,-so that it should no longer harm or overwhelm us, as He Himself says, Matt. 16, 18 ... "
F. Bente, Historical Introductions to the Lutheran Confessions (CPH, St Louis, 1965)