As noted last week, Martin Luther wrote this Christmas message from Wartburg, where he lived in exile after the edict of the Diet of Worms in 1521 that excommunicated him.

This Advent season over the next four weeks, we will reflect upon the sermon Martin Luther preached from his Wartburg Church sometime in 1521 or 1522.[1] This period of Luther’s life was significant, as he was effectively in hiding after being excommunicated and...