Ask Luther about UOJ

"It is a faithful saying that Christ has accomplished everything, has removed sin and overcome every enemy, so that through Him we are lords over all things. But the treasure lies yet in one pile; it is not yet distributed nor invested. Consequently, if we are to possess it, the Holy Spirit must come and teach our hearts to believe and say: I, too, am one of those who are to have this treasure. When we feel that God has thus helped us and given the treasure to us, everything goes well, and it cannot be otherwise than that man's heart rejoices in God and lifts itself up, saying: Dear Father, if it is Thy will to show toward me such great love and faithfulness, which I cannot fully fathom, then will I also love Thee with all my heart and be joyful, and cheerfully do what pleases Thee. Thus, the heart does not now look at God with evil eyes, does not imagine He will cast us into hell, as it did before the Holy Spirit came...."
Sermons of Martin Luther, 8 vols., ed., John Nicholas Lenker, Grand Rapids: Baker Book House, 1983, III, p. 279. Pentecost Sunday. John 14:23-31.

"But outside of this Christian Church, where the Gospel is not, there is no forgiveness, as also there can be no holiness [sanctification]. Therefore all who seek and wish to merit holiness [sanctification], not through the Gospel and forgiveness of sin, but by their works, have expelled and severed themselves [from this Church]."
The Large Catechism, The Creed, Article III, #56, Concordia Triglotta, St. Louis: Concordia Publishing House, 1921, p. 693. Tappert, p. 418. Heiser, p. 195.