How can someone be in mortal sin and think they are in state of grace? If a mortal sin requires full knowledge and deliberate consent.
I understand how we can lose grace. However, I can not understand how someone is in mortal sin, and thinks they are in state of grace?
Good point, BUT
Their are “intrinsic evils” that are always and everyt ime a mortal sin
WRITE ON THERE HEARTS
Rom.2: 15 “They show that what the law requires is written on their hearts, while their conscience also bears witness and their conflicting thoughts accuse or perhaps excuse them”
Heb.8: 10 “This is the covenant that I will make with the house of Israel after those days, says the Lord: I will put my laws into their minds, and write them on their hearts, and I will be their God, and they shall be my people.
Jer.31: 33 “But this is the covenant which I will make with the house of Israel after those days, says the LORD: I will put my law within them, and I will write it upon their hearts; and I will be their God, and they shall be my people”
Catholic Catechism
1783 Conscience must be informed and moral judgment enlightened. A well-formed conscience is upright and truthful. It formulates its judgments according to reason, in conformity with the true good willed by the wisdom of the Creator. The education of conscience is indispensable for human beings who are subjected to negative influences and tempted by sin to prefer their own judgment and to reject authoritative teachings.
Abortion is but one example of this; intentionally missing Sunday Mass is another

:
2272 Formal cooperation in an abortion constitutes a grave offense. The Church attaches the canonical penalty of excommunication to this crime against human life. “A person who procures a completed abortion incurs excommunication latae sententiae,” “by the very commission of the offense,” and subject to the conditions provided by Canon Law. The Church does not thereby intend to restrict the scope of mercy. Rather, she makes clear the gravity of the crime committed, the irreparable harm done to the innocent who is put to death, as well as to the parents and the whole of society.
You made and good but incomplete point my friend
GBY