The NABRE gets the Greek text here better than a good many Protestant Bibles: Christ is filled with the πλήρωμα pleroma, the fullness of the θεότης theotes, the “God-stuff” and in him, we share in this πλήρωμα as well. This would be horrifying to most modern Protestants, although the Wesley brothers, at least, along with the Holiness churches, seemed to understand that “sanctification” is far more than just forgiveness. Our salvation is something that happens in this world or not at all, really. We can’t put it off until after death or we might miss our chance.
Sin, ultimately, is boring: a simple repetition of something humdrum and (often) tedious rather than participation in this πλήρωμα, this fullness of God-stuff. We have, moment by moment, a choice: to participate in the fullness of God stuff, or to simply prattle on thinking that this thing or that is more important.
The odd thing about the Fullness of God-stuff is – since Christ became Man – the πλήρωμα is hidden in our everyday life. If you’re a parent, it’s most often in the care of your children. If you a child, it’s most often in obedience to your parents. If you’re a worker, it’s in not looking at the internet at work. If you’re a boss it’s in paying a just wage to and keeping a healthy environment for your workers.
I mean, sure, it’s also going to Church and praying a Rosary, but that’s the obvious stuff. If you want to find the real treasure, you must actually look in the mundane places. It’s in feeding your cat, and in taking your child to school oh, it’s in doing your homework, and in not fighting with your spouse that we find Salvation. Here we find the fullness of all this God-stuff that we’ve been promised. Even if you’re a priest, or a religious, or even if you are the Pope the chances of you walking into a vision of divinity and being instantly transfigured are very slim. So you’re going to have to learn how to bake bread for Jesus, how to iron your shirts for Jesus, how to keep your floor clean for Jesus and, most importantly, how to send a hundred emails a day for Jesus (or sell stock, or teach kids, or whatever your work is).
This is where the fullness of God dwells for us: doing all these things in Union with Christ who did all these things. Since God became man and lived a human life, working for his Dad, obeying his Mom, taking out the garbage, cooking, washing his clothes, cleansing himself after the bathroom, etc: all these things are things God does for our salvation. And in them – done for the same intent – we participate in the fullness of God-stuff.
Shirking responsibility, ducking out when things get rough, avoiding conflict, pretending to be nice when not being nice, these are all things that Jesus did not do. These are all things that will not lead to our Salvation. in these things does not well the fullness of God-stuff. But it is very easy to do them. Very easy and very boring. It’s in these boring things did we find sin. Mundane and boring are not the same thing.
Mundane means Earthly. It is in common, earthly things like human flesh, bread, and wine, that God has chosen to be manifest.
Only sin is boring. It is an addiction wherein we do the same thing over and over hoping for exactly the same soporific results: We want to forget God. Sin helps us forget God but it also helps us forget ourselves and our mundane duties. The world in which God participates is filled with Divine Life. Sin, boring sin is the only thing secular.