I am glad if I can help in the least bit.
Eve
With Eve the grave sin of pride occurred first in thought. Sin occurs in thought, word, and deed. It has three sources: ignorance, passion, and malice.
**Imputability
**
It is not necessary to intend to offend for the offense to occur.
Imputability …
No mortal sin is committed in a state of invincible ignorance or in a half-conscious state. Actual advertence to the sinfulness of the act is not required, virtual advertence suffices. It is not necessary that the explicit intention to offend God and break His law be present, the full and free consent of the will to an evil act suffices.
Malice of venial sin
The difference in the malice of mortal and venial sin consists in this: that mortal sin is contrary to the primary end of the eternal law, that it attacks the very substance of the law which commands that no created thing should be preferred to God as an end, or equalled to Him, while venial sin is only at variance with the law, not in contrary opposition to it, not attacking its substance. The substance of the law remaining, its perfect accomplishment is prevented by venial sin.
O’Neil, A.C. (1912). Sin. In The Catholic Encyclopedia. New York: Robert Appleton Company.
newadvent.org/cathen/14004b.htm
Concupiesence
Good has two meanings: “the good of reason; the other is in good perceptible to the senses.” Summa Theologica, I, II, Question 30. Concupiscence, Article 1. Whether concupiscence is in the sensitive appetite only?
I answer that, As the Philosopher says (Rhet. i, 11), “concupiscence is a craving for that which is pleasant.” Now pleasure is twofold, as we shall state later on (I-II:31:4): one is in the intelligible good, which is the good of reason; the other is in good perceptible to the senses. The former pleasure seems to belong to soul alone: whereas the latter belongs to both soul and body: because the sense is a power seated in a bodily organ: wherefore sensible good is the good of the whole composite. Now concupiscence seems to be the craving for this latter pleasure, since it belongs to the united soul and body, as is implied by the Latin word “concupiscentia.” Therefore, properly speaking, concupiscence is in the sensitive appetite, and in the concupiscible faculty, which takes its name from it.
newadvent.org/summa/2030.htm
The Church has countered these error about concupiscence:
- Pelagius: reduction the influence of Adam’s fault to bad example,
- Protestant reformers: insurmountable tendency to evil.
The Catechism has something on Concupiscence (I think this was posted before):
406 The Church’s teaching on the transmission of original sin was articulated more precisely in the fifth century, especially under the impulse of St. Augustine’s reflections against Pelagianism, and in the sixteenth century, in opposition to the Protestant Reformation. Pelagius held that man could, by the natural power of free will and without the necessary help of God’s grace, lead a morally good life; he thus reduced the influence of Adam’s fault to bad example. The first Protestant reformers, on the contrary, taught that original sin has radically perverted man and destroyed his freedom; they identified the sin inherited by each man with the tendency to evil (concupiscentia), which would be insurmountable. The Church pronounced on the meaning of the data of Revelation on original sin especially at the second Council of Orange (529) 296 and at the Council of Trent (1546). 297
296 DS 371-372.
297 Cf. DS 1510-1516.
DS is Denzinger-Schönmetzer Sources of Catholic Dogma.