The Locus of Reality
Although all nations see the horrible confusion, vices, and grievous calamities of the human race and feel the burden of sin, yet only the church of God teaches both where sin comes from and what it is and hears the Word of God concerning divine wrath and present and eternal punishments. And though human wisdom teaches us how to guide morals [and] disapproves and punishes actions against common reason, yet it does not recognize what is inherent in the consideration of sin, namely guilt before God or the wrath of God.
Therefore when the Holy Spirit by the voice of the Gospel ministry reproves the world and shows whence sin comes, what it is, and how great an evil it is, we must hear the Holy Spirit as He teaches, for the benefits of Christ cannot be understood if we do not know what sin is.
But the church points out the wrath of God and teaches that sin is a far greater evil than human reason thinks. Nor does the church reprove only external actions which are in conflict with the law of God or reason, as philosophy does; but it reproves the root and the fruit, the inner darkness of the mind, the doubts concerning the will of God, the turning away of the human will from God and the stubbornness of the heart against the law of God. It also reproves ignoring and despising the Son of God. These are grievous and atrocious evils, the enormity of which cannot be told.
lo•cus \ˈlō-kəs\ noun
plural lo•ci \ˈlō-ˌsī, -ˌkī, -ˌkē\ [Latin—more at STALL] 1715
1 a: the place where something is situated or occurs: SITE, LOCATION 〈was the culture of medicine in the beginning dispersed from a single focus or did it arise in several loci?—S. C. Harvey〉
b: a center of activity, attention, or concentration 〈in democracy the locus of power is in the people—H. G. Wells〉