AELW 5:185-187
"Thus we who believe the Word of God are the church. We have a most certain promise, into which we have been called and baptized, and by which we are nourished and sustained; we have the Sacrament of the Altar and the power of the Keys. But we are not Christians and have not been baptized in order that we may get possession of this land. Nor have we been baptized and born again into this life; we have been baptized and born again into eternal life. But what happens in regard to us too? Surely this, that when the church must be glorified and brought to those eternal joys which it awaits in the Word and in hope, then it is subjected to countless persecutions of tyrants and devils; it is harassed and torn by false brethren in many most pitiable ways. This is not what being led to eternal life means, is it? (emphasis mine) Indeed, it means being exposed to eternal misery. Yet hearts must be buoyed up and strengthened against this way of the cross. For we have the Word and the promise. Therefore the glory that has been promised is sure to follow. And meanwhile the church lives and is preserved by faith, which concludes firmly that GOD does not lie. And it learns this wonderful wisdom which is hidden from the flesh and reason, namely, that God is wonderful in His saints (Ps. 68:35) and that His counsels are wonderful. This is also why our Lord and Leader Jesus Christ has His name and is called WONDERFUL in Is. 9:6.
Accordingly, this points out that we should be instructed, in order that if we want to live in a godly manner, we may establish a way of life that is different from the way to which the world and the flesh are accustomed. For we must depend simply on the invisible God and give thanks to God with joy that we have the Word of God, which makes the promise. Concerning this Word Peter says (2 Peter 1:19): “And we have the prophetic Word made more sure. You will do well to pay attention to this as a lamp shining in a dark place, until the day dawns and the morning star rises in your hearts.” For the Word is the light of our life. Otherwise we have nothing of the glow. I know that I have been baptized; I know that I have eaten the body and blood of Christ, that I have been absolved, called, and taught by the Word of the Gospel. I have nothing more of eternal life. I do not yet have a glorified body, which surpasses the splendor of the sun and the stars. No, I have a heart that is still weighed down by many great evils and terrors. I carry around a body that is exposed to many infirmities and to death. Nothing is less apparent in the body as well as in the soul than eternal life. But the promise will not deceive us. Therefore let us cling to and persist in faith and hope, and let us be content with the Word which promises. In addition, we have this external life and fellowship; we have parents, magistrates, the external ministry of the Word, and the external goods that are necessary for this life. All this is a preparation and an approach, as it were, to the life to come.
This is the proper and chief doctrine of the church. It has been handed down by the Holy Spirit. The world and the flesh do not know it. It teaches us that we are lords and heirs of eternal life in no other way than the way in which Jacob was an heir of the blessing. When he had obtained it, he was sent into exile from the land and the house of his father. For this is the way the Divine Majesty deals with His saints, and this is the faith of the saints concerning which we have spoken up to this point. Now matters pertaining to morals follow, likewise the fruits of faith."