Lukewarmness

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McHugh–Callan, Moral Theology

John A. McHugh, O.P., and Charles J. Callan, O.P. — 1 passage

Vol. I, Pt. II, Q. I, Art. 7. The Sins Against L…, Lukewarmness

n. 1327.

The sin of carelessness about the service of God is also known as tepidity or lukewarmness. It consists in a want of fervor, and causes one to live in spiritual languor, wishing on the one hand to live holily and avoid sin, but fearing on the other hand the effort and generosity required for the practice of virtue and the struggle against evil. It is, therefore, most dangerous.

(a) Even if it is only internal, it may be more dangerous to the one concerned than grave sin itself, since threats and promises that move a sinner are often unavailing with one who is tepid and moving on to grave sin. Thus, we read: “I know thy works, that thou art neither cold, nor hot. I would that thou wert cold or hot. But because thou art lukewarm, and neither cold, nor hot, I will begin to vomit thee out of my mouth” (Apoc., iii. 15, 16).

(b) If it is external, this sin is a danger to others who witness the disrespectful way in which one prays or exercises other duties owed to God.