@Faith
The Lutheran Confessions say
nothing about the Assumption of Mary. Thus, it is not doctrine in the LCMS.
That does not mean ergo it is declared heresy but it does mean it is not taught as doctrine. While many Lutherans expressed a "pious opinion" regarding the Perpetual Virginity of Mary, that too is not doctrine in Lutheranism but UNLIKE the Assumption of Mary, the PVM was commonly held as pious opinion although not so much currently.
The Catholic Church does not officially teach that Mary died OR that she did not, there is no doctrine on that point. Both views are held by Catholics.
The LCMS doesn't believe anything about that.
No one knows what happened to the bones of Mary. The same is true of my great uncle (he was an officer on a submarine during WWII... the sub and the bodies aboard it have never been found). But just because the bones have not been found is
not dogmatic confirmation of an essential fact that ergo my great uncle was assumed into heaven; his bones not being found means this: his bones have not been found. That's it, that's all, ain't rocket science.
Totally unrelated to the Assumption of Mary.....
Matre Dei (Latin for Mother of God, a
title mostly used in the West) or
Theotokos (Greek for God bearer, a title used mostly in the East) are both
TITLES for Mary and not doctrines. Not teachings, not doctrine, not dogma. Nowhere. Ever. They are simply (and only) titles that affirm that since Jesus is God and since Mary is the mother of Jesus
ergo Mary is the mother of God or bearer of God. These are TITLES for Mary since the Early Church. Lutherans at times use the term "Matre Dei" as well (it's found in our Confessions) but again, only as a
title.
Again, nowhere mentioned in the Lutheran Confessions. Not as doctrine, not as heresy. The Confessions are silent on this. But I know of no Lutherans (past or present) that personally affirm it. I doubt you personally would be shot or even excommunicated if you held this as pious opinion but who knows.
Faith,
When you are Confirmed and/or officially join an LCMS parish, you will be asked if you accept the teachings found here (not including the Table of Duties). Click on the link here: The Small Catechism I encourage you yet again to READ this. Then post if you have questions about anything here that you will be asked if you agree with (rather than issues you won't be asked to agree with).
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