A portion of a letter from Martin Luther to his wife, Katie, who had been worrying about him. The letter was written on February 7, 1546. He died eleven days later after experiencing a heart attack or stroke.
Grace and peace in the Lord! You, dear Katie, read John and the Small Catechism, about which you once said: Everything in this book has been said about me. For you prefer to worry about me instead of letting God worry, as if he were not almighty and could not create ten Doctor Martins, should the old one drown in the Saale, or burn in the oven, or perish in Wolfgang’s bird trap. Free me from your worries. I have a caretaker who is better than you and all the angels; he lies in the cradle and rests on a virgin’s bosom, and yet, nevertheless, he sits at the right hand of God, the almighty Father. Therefore be at peace.
Luther's Works, Letters III, Vol. 50, edited by J. J. Pelikan, H. C. Oswald and H. T. Lehmann, Fortress Press, letter # 321.