Sloth is one of the seven deadly sins in Catholic teachings. It is the most difficult sin to define and credit as sin, since it refers to an assortment of ideas, dating from antiquity and including mental, spiritual, pathological, and conditional states. One definition is a habitual disinclination to exertion, or laziness. Views concerning the virtue of work to support society and further God's plan suggest that through inactivity, one invites sin: "For Satan finds some mischief still for idle hands to do.".

The seven deadly sins, also known as the capital vices or cardinal sins, is a grouping and classification of vices within Christian teachings. According to the standard list, they are pride, greed, wrath, envy, lust, gluttony and sloth, which are contrary to the seven heavenly virtues.