But where do our souls dwell when the abode of every creature is afire and there is no earthly dwelling place? Answer: My dear hearer, where is the soul now? Or where is it when we sleep and are not conscious of what is taking place in our bodies and in the world around us? Do you think that God cannot so preserve or hold the souls of men in his hand that they will never know how heaven and earth passed away? Or do you think that he must have a bodily home for the soul, just as a shepherd has a stable for his sheep? It is enough for you to know that they are in God’s hands and not in the care of any creature. Though you do not understand how it happens, do not be led astray. Since you have not yet learned what happens to you when you fall asleep or awaken, and can never know bow near you are to waking or sleeping, though you daily do both, how do you expect to understand all about this question? The Scripture says, “Father, into thy hands I commend my spirit,” and so let it be. Meanwhile there will arise a new heaven and a new earth, and our bodies will be revived again to eternal salvation. Amen. If we knew just how the soul would be kept, faith would be at an end. But now we journey and know not just whither; yet we put our confidence in God, and rest in his keeping, and our faith abides in all its dignity.
Martin Luther, Church Postil for the Second Sunday in Advent (Luke 21:25-36)