I believe he's referencing the more/less principles of Matt 13:12, Mark 4:24 and Luke 12:48.
But it's the same age old problem, which is really "within" the flesh of the believer.
Some will read the scriptures above or any other, and they'll think in their heart, "if I don't get more light Gods going to destroy me in hell." Or, in converse manners, others will read themselves as secure and understand that IS more light. And they'll move away from the workings in the flesh, understanding that direction is slaveship to the operations/operators (by my sight) in the flesh. But this is not done under threat or duress. The latter has emerged from the ground of darkness and destruction into the Light of Life in a greater degree.
It's a very critical distinction in the hearts of the readers and a very different relationship with God in Christ.
I could give several analogies along the lines of "the harder you try the worse it will get" for the former sight, as such will sink further and further into condemnation, primarily of others, but in reality they really do see their own failures and they take them out on others.
I learned this a long time ago. That as a believer progresses in their personal battles against sin, post salvation, they finally get it down to dealing with a single evil thought. And they also think that by perfect doctrines, they are good, but ONLY if they have perfect doctrines too. And, knowing that evil thoughts are defiling and yes SIN (Matt. 5:28), I feared damnation. So, I would immediately repent in hopes that I could eventually wipe out every form of defilement.
And thus began the "vicious circle" of works salvation.
But one day I realized that I really was a sinner in the flesh/mind. That "conclusion" can NOT be changed, and that such random thoughts were just "toying" with me, evil and defiling as they ARE, I understood that I really was saved SOLELY by the forgiveness, Grace and Divine Mercy of God in Christ. It was much more "real" to me, salvation, secure, at that junction. And now I detest believers who seek to damn other believers, including themselves to potential hell, because it is a form of works salvation, a working of EVIL in the flesh, and it ain't going to happen that way. Exactly NOBODY is going to rid themselves of "evil present" with them. Romans 7:21.
Also from there, when the "burden" of judging any believers fell from my eyes, there was much freedom in my own heart. I'll never look back from the Love of God in Christ. And really, that's where I started to begin with. I just got caught up in modern day religious phariseeisms.