consists of marks visible to men. The other is internal and consists of testimonies by which the believer feels within himself that he is a child of God. The external mark consists of this, that we are members of the church of Christ. Now we call that the church of Christ the place wherever God’s Word is truly preached, wherever the sacraments are purely administered, and wherever the one God is addressed in the name of his only Son, Jesus Christ. This church, first of all, is often called “the kingdom
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