They condemned it as a serious sin, even before ensoulment.

Members are instructed to report serious sins committed by others members.

In a statement, the archdiocese said sexual abuse was "a serious sin."

Let's get him involved in some serious sin so that he gives up that notion.

And it's a very serious sin if you abandon it.

All sexual activity, both heterosexual and homosexual, outside of marriage is considered a serious sin.

Making a full Confession of any serious sins to Church leaders.

This implies that serious sins, if any, be confessed at least once a year.

I like to think that I've never committed a serious sin.

The most serious sins are punished here, in lower Hell.