An exchange between me Godwin Delali Adadzie and Catholic apologist Mark Joseph Bonocore some years ago when I was still learning more about the Catholic faith. It was formerly hosted on my Catholic apologetics ministry’s site Sts. Peter and Paul Catechism Ministry.
Please I want to know whether missing the Sunday High Mass is a Mortal sin or not. I went to confession some time ago and I asked my Parish priest about this issue and he said continuous missing of Sunday Mass can lead to Mortal sin. What’s the Official Church view on this.
As a matter of canon law, to intentionally miss Mass on a Sunday is a mortal sin. But this must be intentional, and when Mass is available. If Mass is not available in a certain place, and so there is no Mass to attend, then it is of course not a person’s fault if they do not attend Mass, and so not a sin. Also, if a person is seriously sick, then it is not a sin if they miss Mass, since they are sick. Or, if some important emergency arises, and a person must miss Mass because of the emergency, then, again, it is not a sin. It is only a sin when a person can attend Mass and freely chooses not to do so that it is a mortal sin. If your priest says otherwise, then he is wrong and not teaching what the Church teaches. Look at the Catechism sections 2180 and 2181.