Christ's Birth Is Your Birth

From a Sermon for Christmas Day by Martin Luther, reprinted in Sermons of Martin Luther, vol I, pp. 144-45 (Baker Book House Company 1983).

We see here how Christ, as it were, takes our birth from us and absorbs it in his birth, and grants us his, that in it we might become pure and holy, as if it were our own, so that every Christian may rejoice and glory in Christ's birth as much as if he had himself been born of Mary as was Christ. Whoever does not believe this, or doubts, is no Christian.

O, this is the great joy of which the angel speaks. This is the comfort and exceeding goodness of God that, if a man believes this, he can boast of the treasure that Mary is his rightful mother, Christ his brother, and God his father. For these things actually occurred and are true, but we must believe. This is the principal thing and the principal treasure in every Gospel, before any doctrine of good works can be taken out of it. Christ must above all things become our own and we become his, before we can do good works.

But this cannot occur except through the faith that teaches rightly to understand the Gospel and properly lay hold of it. This is the only way in which Christ can be rightly known so that the conscience is satisfied and made to rejoice. Out of this grow love and praise to God who in Christ has bestowed upon us such unspeakable gifts. This gives courage to do or leave undone, and living or dying, to suffer every thing that is well pleading to God. ...

Therefore see to it that you do not find pleasure in the Gospel only as a history, for that is only transcient; neither regard it only as an example, for it is of no value without faith; but see to it that you make this birth your own and that Christ be born in you."