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Jason wrote:

Hi, guys —

  • I have been to Confession but I forgot a big sin.
  • Is that sin still forgiven or do I still have to confess it?


  { If I forgot a big sin; do I still have to confess it? }

John replied:

Hi, Jason —

If you genuinely forget to confess the sin, then it's been forgiven.
If you omitted the sin on purpose then you've committed another sin by omitting it.

That means none of the sins you confessed were forgiven.


Paul replied:


It is always good to confess the sin you forgot in your next Confession, particularly if it was mortal.

I'm not exactly sure what the Church teaches on whether a sin like is conditionally forgiven, but
I personally wouldn't receive Communion until such a mortal sin, I was conscious of, was confessed.



Mike replied:

Hi, Jason —

Thanks for the question.

If the sin you forgot is a mortal sin, yes, you have to go to Confession and mention it before receiving Holy Communion. I would tend to agree the last sentence of my colleague Paul's reply.

This posting should help you if you don't know what a mortal sin is:

Hope this helps,


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