The City of God stands as Augustine's masterwork of theological defense and construction, written over thirteen years in response to accusations that Christianity brought ruin upon Rome. This first volume contains the first ten books of sustained refutation—demolishing pagan claims that traditional worship secured either temporal prosperity or eternal happiness—followed by the beginning of his positive vision in Books Eleven through Thirteen, where he traces the origin of two societal orders to the primordial division among the angels. What emerges is not merely an apology for Christianity but a philosophy of history that subordinate the fate of empires to the hidden providence of the one true God, whose sovereignty extends from creation through the fall to the final judgment.
The logical and linguistic difficulties here are real. We cannot say a person is “in death” in the same way we say someone is “in sleep” or “in grief.” Those who sleep are sleeping; those who grieve are grieving; but those who are dead are not dying. The dead are said to be “in death” until the resurrection, yet we do not call them dying. Augustine finds it fitting that the Latin language itself reflects this mystery: the verb moritur (to die) cannot form its perfect tense according to the normal grammatical pattern. While similar verbs yield a perfect participle, moritur produces mortuus, which functions as an adjective rather than a participle. Just as the reality of dying cannot be captured in a definite state, so the word resists normal grammatical declension. Yet this applies only to the first death. In the second death, the wicked will always be in death—never living, never dead, but endlessly dying. Never will anyone be more disastrously in death than when death itself becomes deathless.
When God threatened Adam with death for eating the forbidden fruit, which death did He mean? Augustine answers: all of them. The first death comprises two—the soul forsaken by God and the body forsaken by the soul. The second death is the complete death, comprising all deaths in one eternal punishment. God’s warning encompassed the whole cascade of consequences that would flow from transgression.
The immediate effect of the first sin was God’s abandonment of the human soul. Adam and Eve became aware of their nakedness and experienced shame where none had existed before. A new motion arose in their flesh—disobedient desire that they could not control. This was fitting retribution: the soul that had refused to serve God lost its own authority over the body. Having deserted its superior Lord, it could no longer command its inferior servant. The flesh began to lust against the spirit, and this internal warfare has characterized human existence ever since. We are born inheriting this seed of death, carrying in our members the conflict that originated in the first transgression.
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