St. Augustine of Hippo
lat. Aurelius Augustinus, (354—430)
St. Augustine (Aurelius Augustinus) was one of the greatest theologians of Western Christianity.
The loving one — the loved one — love itself
In the whole of the patristic literature only in St. Augustine do we find this schema of love: the loving one/the loved one/love itself, although he says nothing about sacrifice and comfort as the overcoming of tragedy. But he understood the Third hypostasis as hypostatic Love, and this constitutes the undying value of his trinitarian theology.
Devil does not seduce those predestined to eternal life
St. Augustine thought that devil is "prevented from harming believers":
… “And shut him up, and set a seal upon him, that he should deceive the nations no more till the thousand years should be fulfilled.” “Shut him up,”—i.e., prohibited him from going out, from doing what was forbidden. And the addition of “set a seal upon him” seems to me to mean that it was designed to keep it a secret who belonged to the devil’s party and who did not. ‹…› For what Christian is not aware that he seduces nations even now, and draws them with himself to eternal punishment, but not those predestined to eternal life?
City of God, v.XX, ch.VII