But where did Abraham go? Moses says: “He was gathered to his people.” Do people, then, still remain after this life? For the words sound as though he had gone from one people to another or from one city to another. This is truly an outstanding and notable evidence of the resurrection and the future life. It should be set forth for the comfort of all who believe in God. Although more excellent and clearer evidences are presented to us in the New Testament, it is nevertheless worthwhile to see what the saintly fathers in the Old Testament had and believed.
We have the grace and the gift. In addition, we have a clear and extensive knowledge about death and life, since we are sure that our Savior Christ Jesus is sitting at the right hand of God the Father and is waiting for us when we depart this life. Therefore when we depart from the living, we go forth to the (guardian of our souls (1 Peter 2:25), who receives us into His hands. He is our Abraham in whose embrace we take delight. He lives. Indeed, He rules forever.
Luther, M. (1999, c1964). Vol. 4: Luther’s works, vol. 4 : Lectures on Genesis: Chapters 21-25 (J. J. Pelikan, H. C. Oswald & H. T. Lehmann, Ed.). Luther’s Works (4:309). Saint Louis: Concordia Publishing House.