Thomas Aquinas , and sins of commission The way
Thomas Aquinas viewed sin and vices was radically different from later approaches, especially that of 17th-century
moral theology. He presented sin and vices as contraries of
virtues. He discusses the subject in his
Summa Theologica part Ia–IIae (
Prima secundae) qq. 71–89. In one of his definitions of sin Thomas quotes Augustine of Hippo's description of sin as "a thought, words and deed against the Eternal Law."' To recognise the possibilities of sin in man is equal to acknowledge his human nature, his control and mastery of his own actions. Sin is a motion to the goal, it is judged by the object to which it is directed. The field of sin is the same as the field of virtue. There are three major fields: relationship with God, with oneself and with the neighbour. Thomas distinguished between
mortal and
venial sins. Mortal sin is when a person has irreparably destroyed the very principle of his/her order to the goal of life. Venial sin is when he/she has acted in a certain disordered way without destructing that principle: According to Aquinas the gravity of sin depends also on "some disposition of the agent" (cf. STh I–II q. 18, aa. 4, 6). Sin, venial by reason of its object, may become mortal. It happens when person fixes his/her ultimate happiness, the last end of his/her life (Lat.
finis ultimus) in the object of that venial sin. When venial sin is used as a way to provoke mortal sin it becomes mortal as well, e.g. when someone uses empty conversation or a chat to seduce someone to commit adultery. Also sin, mortal by reason of its object, may become venial because of the agent's disposition when his/her evil act does not have full moral capacity, i.e. is not deliberated by reason. That may happen for instance when sudden movements of unbelief arise in the mind. (Cf. STh I–II q.72 a.5). The difference and gravity of sins may be discerned on the grounds of spirit and flesh, even mortal sins may differ in gravity.
Carnal sins like lust, adultery or fornication, gluttony and avarice, because the person who commits them is inordinately directed towards material goods that are a serious matter, are mortal sins. They may cause much shame and infamy. But spiritual sins like
blaspheming of God or
apostasy are, according to Thomas, still greater evil, as they have more of the aversion from God. They are directed against a greater object. The formal, essential element of sin is more at the centre in them. (cf. STh I–II q.72 a.2) According to another formulation of the concept of sin in the
Summa, at the heart of sin is "the turning away from the immutable good", i.e. God, and "inordinate turning to mutable good", i.e. creatures. (STh I–IIae q.87 a.4) This cannot be understood as if in the concrete sinful deed the sinner commits two separate and independent acts. Both
aversio and
conversio constitute one single guilty action. At the root of the inordinate turning to the creatures is self-love which expresses itself in disordered desire (
cupiditas) and rebellion towards God (
superbia). Speaking about
sloth (Lat.
acedia) Thomas points out that every deed which "by its very nature is contrary to charity is a mortal sin". An effect of such deed is the destruction of "spiritual life which is the effect of charity, whereby God dwells in us." Sin of a mortal character is always committed with the consent of reason: "Because the consummation of sin is in the consent of reason"'. (cf. STh II–IIae q.35 a.3) Venial and mortal sins can be compared to sickness and death. While venial sin impairs full healthy activity of a person, mortal sin destroys the principle of spiritual life in him/her.
Catechism of the Catholic Church The
Catechism of the Catholic Church states the following.
Catholic doctrine distinguishes between personal sin (also sometimes called "actual sin") and
original sin. Personal sins are either mortal or venial.
Mortal sins are sins of grave (serious) matter, where the sinner performs the act with full knowledge and deliberate consent. (cf.
Catechism of the Catholic Church (§1857) The act of committing a mortal sin destroys charity, i. e. the
grace in the heart of a Christian; it is in itself a rejection of God (Catechism of the Catholic Church (§1855). If left un-reconciled, mortal sins may lead to eternal separation from God, traditionally called
damnation.
Venial sins are sins which do not meet the conditions for mortal sins. The act of committing a venial sin does not cut off the sinner from God's grace, as the sinner has not rejected God. However, venial sins do injure the relationship between the sinner and God, and as such, must be reconciled to God, either through the
Sacrament of Reconciliation or receiving the Eucharist (after proper contrition fulfilled). Both mortal and venial sins have a dual nature of punishment. They incur both guilt for the sin, yielding eternal punishment in the case of mortal sins and temporal punishment for the sin in the case of both venial and mortal sins. Reconciliation is an act of God's mercy, and addresses the guilt and eternal punishment for sin. Purgatory and indulgences address the temporal punishment for sin, and exercise of God's justice. Roman Catholic doctrine also sees sin as being twofold: Sin is, at once, any evil or immoral
action which infracts God's law and the inevitable consequences, the
state of being that comes about by committing the sinful action. Sin can and does alienate a person both from God and the community. Hence, the Catholic Church's insistence on reconciliation with both God and the Church itself. The Roman Catholic view of sin has recently expanded.
Monsignor Gianfranco Girotti,
Regent of the Catholic
Apostolic Penitentiary, has said that "known sins increasingly manifest themselves as behavior that damages society as a whole," including, for example: • "certain violations of the fundamental rights of human nature, through genetic manipulations [or experiments]," • "drug [abuse], which weakens the mind and obscures intelligence," • "
environmental pollution," • "abortion and pedophilia," and • the widening social and economic differences between the rich and the poor, which "
cause an unbearable social injustice" (accumulating excessive wealth, inflicting poverty). The revision was aimed at encouraging confession or the
Sacrament of Penance. Mortal sins, which are any severe and intentional actions that directly disobey God, are often confused with the
seven deadly sins, which are pride, envy, wrath, sloth, greed, gluttony, and lust. They are not, however, the same. The seven deadly sins are called "deadly" because they might lead another to commit other sins. Some forms of the seven deadly sins (i.e. debilitating one's health because of their love of food) can constitute as grave matter, while others may just be venial (i.e. over-eating). Another group of four or five sins distinguished by the Church are the
sins that cry to heaven:
murder,
sodomy, oppression of the weak, and defrauding the laborer. == Eastern Orthodox views ==