Is incredulity a mortal sin?

It seems similar but lesser to heresy which must be a mortal sin but is incredulity?

Is it the same for Catholics and Protestants?


:okpeople: Anybody there?

To be unwilling to believe–to freely, stubbornly refuse to believe although one knows the truth–that may be a mortal sin depending on the gravity of the belief being denied.

Being unable to grasp a truth isn’t a sin. Many factors, none of them sinful, might make a person unable to accept an important truth. Still, if the person refuses to be enlightened, then such incredulity might stray into sin through willfulness.

CCC 2089 which I have quoted below deals with incredulity, heresy, and schism. All three are sins of grave matter.

CCC 2089 Incredulity is the neglect of revealed truth or the willful refusal to assent to it. “Heresy is the obstinate post-baptismal denial of some truth which must be believed with divine and catholic faith, or it is likewise an obstinate doubt concerning the same; apostasy is the total repudiation of the Christian faith; schism is the refusal of submission to the Roman Pontiff or of communion with the members of the Church subject to him.”

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