The absence of any mention of lying among mortal sins raises questions about the uniformity and logical coherence of the Christian moral system.

Moral Inconsistency: Questioning the Exclusion of Falsehood from Morta

The absence of any mention of lying among mortal sins raises questions about the uniformity and logical coherence of the Christian moral system. In the presented sources, lying is literally excluded from the list of sins considered mortal; instead, it is categorized as a sin that wounds the soul but is not grave enough to directly result in eternal damnation.

For instance, source link txt clearly distinguishes between mortal and non-mortal sins. Mortal sins include acts such as heresy, schism, apostasy from the Christian faith, blasphemy, magic and witchcraft, murder and suicide, lust, adultery, unnatural lustful sins, drunkenness, sacrilege, robbery, theft, and any inhumane injury. If one dies in a mortal sin without having repented, their soul goes to hell, with no hope of salvation. Non-mortal sins, on the other hand, are listed as: gluttony, lustful glances, foul language, lying, theft, overindulgence, and mockery.
(source: link txt)

Additionally, source link txt confirms that lying is classified as a non-mortal sin, which underscores its relative mildness compared to actions that lead to eternal ruin:

"Non-mortal sins: gluttony, lustful glances, foul language, lying, theft, overindulgence, and mockery. If such sins become habitual, they approach mortal sin."
(source: link txt)

This bifurcation in moral evaluation raises doubts about the integrity of the concept, as truth and honesty play a central role in Christian tradition. If lying, which constitutes a departure from the truth, is classified as a less severe sin, it creates the impression that the moral framework of the faith may selectively assess actions, thereby calling into question the comprehensiveness of its core moral principles. Thus, the exclusion of lying from the list of mortal sins can be perceived as an element of internal contradiction, since in the context of strict measures for other violations of faith and morality, the issue of speaking falsehood remains insufficiently regulated.