if you don't realize what the mystery of lawlessness is so as to repent of all spiritual unrighteousness, then you may not be able to realize what your sin is if you commit spiritual lawlessness, and if so, this doesn't mean God won't consider your sin as sinful as it is and take it into account when He judges you - the difference between the religious doctrine of the true One and the religious doctrine of the evil one may be very subtle, for example, according to the Word of the true One, there is an eternal circle of existence and positions of the souls, to put it another way, an eternity of eternities, and the soul(whichever it may be) may be born and die only once within one single(little) eternity, while, according to the word of the evil one, there is ostensibly one enormous eternity during which there must supposedly be a cycle of so-called samsara i.e. cycle of many consecutive births, forms of existence and deaths inevitable for every soul in the universe, which would be much worse than the eternal judgment of the true One, because every soul in the universe would suffer multiple times successively within that enormous eternity (i.e. without there being any long break for any soul) (Revelation 13:9-10)...
Blessings