It is very grave matter to do so. You should immediately take it to confession, telling the priest that you intended to give up meat, but just forgot. It is not a mortal sin, but the level of culpability could be increased if you weren’t really taking care to remember.
if you commit a mortal sin unintentionally, (thus making it not a mortal sin) you are still required to mention it in your next confession. you may receive the Blessed Sacrament, but you still should mention it. i have heard that eating meat on fridays or days of abstinence can be grave, (im not sure if it is true) however, *accidentally *forgetting to not eat meat on a friday is far from being a mortal sin, but you should strive to constantly remind yourself not to eat meat. i often struggle with this throughout the year as i try and abstain friday and wednesday but sometimes i forget. its what make us human.
This is true. If one sins, and it’s grave matter, but unintentional, then it’s a venial sin, not a mortal sin.
In this case, it’s not necessary to go to confession, but it’s not a suggestion without merit…!
If he forgets it’s Ash Wednesday and eats a burger, he has committed no sin so there is nothing to confess.
No: keeping abstinence on Ash Wednesday, Good Friday, and Fridays in Lent is an obligation that binds gravely (see Paul VI’s Paenitemini). Therefore, if one should break a required fast or fail to abstain, but not do so on purpose, it would be a venial sin. It is not the case that it would not be a sin…!
Therefore, while it would not be necessary to confess it, nevertheless it might not be a bad idea.
This is not necessarily true. If it’s a venial sin, the Church recommends that you confess it, but doesn’t require that you do so (cf CCC 1458; also, can. 988 §2).
However, there is something to be said for this practice: if you’re uncertain about what makes a sin ‘mortal’, then confessing all grave matter ensures that you don’t neglect to confess all you should. Therefore, while it’s not a ‘requirement’, per se, it’s not a bad idea.
I have run into this many times since I live in the US. The general atmosphere is so secular that is very hard for me to remember is lent and accidentally I’ve eaten meat on fridays during lent. When I asked my priest about it he said I should confess it. Ever since I’ve been confessing it when it happens.
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