“But we would not have you ignorant, brethren, concerning those who are asleep, that you may not grieve as others do who have no hope” [I Thess. 4:13].
Here St. Paul puts in some good sugar, mixing the bitterness which is here with sweetness, and saying: You are sorrowful and grieving over those who have died. It is true that it hurts to lose a good friend. I do not reproach you for this; I praise it, for it is a sign that these are good hearts which are thus concerned about the deceased. But you must discriminate between your death and the death of the heathen, between your sorrow and that of the heathen. They have no hope after this life, but you know that you do not die but only fall asleep. For “since we believe,” he goes on, “that Jesus died and rose again” [I Thess. 4:14], it is also certain that God will bring with him those who have died in Christ and will not let them simply remain where we think they remain, but will bring them to himself.
Note particularly that he does not say: Since you believe that Christ fell asleep. He rather speaks more sternly of Christ’s death than ours and says: Since we believe that Christ died. But of us he says that we do not die, but only fall asleep. He calls our death not a death, but a sleep, and Christ’s death he calls a real death. Thus he attributes to the death of Christ such exceeding power that by comparison we should consider our death a sleep. For this is the right way to give comfort, to take the death which we suffer as far as possible from our eyes, at least according to the spirit, and look straight at the death of Christ. (Luther’s Works, v.51 p.231, 233-234)