What constitutes "grave sin"?

[pedro_carmona]

We know that if we are guilty of grave sin we should not receive communion. There is much confusion as to what constitutes grave sin. Where should lay Catholics go for information about this so that we are better informed and know how to inform others?

 

[Devon_Caffran]

This link should be give you the answer you need. If you have any further questions or concerns that are not answered by this link, please contact Catholic Answers directly.

Recommended Reading:
How do you know when you have committed a mortal sin?