“Now the man who had been healed (at the pool of Bethesda) did not know who it was, for Jesus had withdrawn, as there was a crowd in the place. Afterward, Jesus found him in the temple, and said to him, ‘See, you are well (ὑγιὴς, healthy)! Sin (ἁμάρτανε) no more, that nothing worse befall you.’” (Jn 5: 13-14)
What does our Lord mean by “sin no more”? Is that even possible, for any human being? I think our Lord means “sin” (amartia, missing the mark) in the “big” sense. Not in the “small” sense, of pronouncing an idle word here and there, or occasionally getting irritated, or oversleeping, or getting distracted by “sinful” images or sounds, either voluntarily or involuntarily, and stuff like that.
What does “sin” mean in the “big” sense? It means missing “the” mark or purpose of my life, by not following my specific vocation; by not being the me that God wants me to be. In this case, my whole life becomes “sin.” It turns into people-pleasing and posing and wearing masks, according to merely-human expectations and demands. It is a rut, similar to the one in which the paralysed man at Bethesda found himself, of being cut off from the “living water” and true life that God offers me, in His purpose for me. So let me be “healthy” today, in Christ, staying close to His word and voice in my life, so that "other" voices don't carry me into meaninglessness and paralysis of my God-given gifts.