So do you think, that if I went to confession regularly, but in a moment of weakness masturbated and then got hit by a bus I would be condemned?
So - If you studiously careful around high places but then one day, in a moment of weakness, you jump from a cliff, will you not be dead??
A silly analogy I admit, but it speaks to the principle behind such statements - No matter how careful one is in avoiding deadly things, it only takes one to kill you and all of the previous caution will not make a difference.
But -
More seriously - in looking at this statement, which is not at all uncommon, consider what you are are saying…
a) You go to confession regularly -
This is good, BUT are you also actively seeking to avoid sin? Hopefully you are.
b) Then, in a moment of weakness, you commit a grave sin -
the “moment of weakness” comment is the key to knowing if the sin rises to the level of Mortal or not.
I believe God judges us by a bigger picture.
Indeed God does look at the larger picture and part of that bigger picture is whether one really and truly Loves God more than ones self. That IS, after all, the first and greatest commandment. And if you stand before God with even one
unrepentant, I repeat,
unrepentant, Grave sin on your soul…What will that say about your love for God? What will it say about the “bigger picture”.
As we seek to grow in God and in holiness, we need to grow past these ideas of somehow “keeping score” (oh just one won’t get me condemned) as if we are somehow assured of salvation so long as we don’t do “too much” bad stuff. Rather we must work out our salvation by doing as much good stuff as possible and avoiding the bad stuff at all cost. Christ does not call us to be good enough. Christ calls us to perfection (Mt 5:48)
Sorry to ramble on, and “hunter123”, I’m not picking on you…I struggle with these things myself so I’m picking on me more than you…

Also I struggle to try to put into words just what I mean…what is in my heart…But I always seem to wind up rambling…
I thank God for all the good people here and hope that we continue to be a strength and comfort to each other.
Peace
James