On The Holy Trinity by St. Augustine
Chapter 10.--As Christ is the Mediator of Life, So the Devil is the Mediator of Death.
13. Therein is our true peace and firm bond of union with our Creator, that we should be purified and reconciled through the Mediator of life, as we had been polluted and alienated, and so had departed from Him, through the mediator of death. For as the devil through pride led man through pride to death; so Christ through lowliness led back man through obedience to life. Since, as the one fell through being lifted up, and cast down [man] also who consented to him; so the other was raised up through being abased, and lifted up [man] also who believed in Him. For because the devil had not himself come thither whither he had led the way (inasmuch as he bare indeed in his ungodliness the death of the spirit, but had not undergone the death of the flesh, because he had not assumed the covering of the flesh), he appeared to man to be a mighty chief among the legions of devils, through whom he exercises his reign of deceits; so puffing up man the more, who is eager for power more than righteousness, through the pride of elation, or through false philosophy; or else entangling him through sacrilegious rites, in which, while casting down headlong by deceit and illusion the minds of the more curious and prouder sort, he holds him captive also to magical trickery; promising too the cleansing of the soul, through those initiations which they call teletai, by transforming himself into an angel of light, through divers machinations in signs and prodigies of lying.