The moral philosophy and Christianity:
Etienne Gilson says
“The philosophy is not in the history of Christianity until the time that some Christians take position before it, is to condemn it, either to absorb the new religion, is to be used for purposes of Christian apologtica “. 
The influence of Neoplatonism in these early Christian philosophers, called Greek Fathers, or apologists, is fundamental. So that to the second centuries after Christ, St. Justin martyr of his works dedicated to Marcus Aurelius, and discusses the reasons why a Greek pagan convert to Christianity.The philosophy was “leading us to God and he joins us.” In interpreting from the dialog Christian vision platnico teolgica on the soul, Timaeus, explains Justin which
The soul lives immortal because she receives life and not, as Plato deca because it is the beginning of life.
Long before San Agustin, and the apologist Tatian talk that the new Wisdom (Christianity) should become the philosophy of the Roman Empire.
In the second century of Christ takes place AFTER the philosophy known as Gnosticism, more well-known Through his Christian critics, as they have lost the original texts of the three main gnsticos : Marcin, Baslides and valentine.
For Marcin, one of the main problems consists in the mistake of trying to reconcile two positions antitticas: the Old and New Testament. His repudiation of judasmo is as radical.
Baslides gnosis is such a complex construction that recalls the mythic structures of the Universe, calling travs of eons and the theory of pansperma, which arise as a seed, the different affiliations Cosmos and life of the Spirit.
Valentine suggests that there are three kinds of men: the materials, Spiritual and Psychic, created by God gnstico. The responsibility for the actions of these different types of men created, not so much about themselves as their creator.
Given this development of Gnosticism, comes a new set of parents of Christianity, including mention of St. Irenaeus, also in the second half of the second centuryC. For Irenaeus, the crucial topics about lay in the problem of evil and freedom or free will. Since God the Father has made all men in his image, the main powers of the soul are the intellect and free will. An intelligent being is a free, even for use in their own way of understanding the divine commands. The responsibility for the actions in the religious and moral fundamental in Christianity. Never accept, the way of the heretic Pelagius, that grace and free will were equivalent, as this committed to God in the sense of making responsible for evil in the world. Although sin has diminished freedom, not removed.
Among the Latin Fathers called San Agustin is noteworthy (354-430 d.C. We of interest include, for San Agustin, a concept- Augustinian politics, in the sense expressed by Gustavo Bueno in his book First Essay on the categories of political science. Our interest may be justified, we think, for the proposal hacamos on the need for a historical overview critic of morality and its relationship with the policy and law. We thus emphasize that there is indeed a policy of the Philosophy implicacin, and as is logical, moral. It is noteworthy, also, that a book featured on the History of Medieval Philosophy, as the aforementioned Wilson, not mentioned at all, in discussing the philosophy of San Agustin, the topics about.