
James 4:17 · World English Bible
James 4:17 Meaning To Him Therefore Who Knows to Do
To him therefore who knows to do good, and doesn’t do it, to him it is sin.

James 4:17 · World English Bible
To him therefore who knows to do good, and doesn’t do it, to him it is sin.
Sin includes what is left undone. Most people picture wrongdoing as something done, so the ledger widens to cover the visit never made, the apology never offered, the help someone saw was needed and declined.
From the Catholic reading below.
The same verse, read by 2 traditions.

CATHOLIC
Sin includes what is left undone. Most people picture wrongdoing as something done, so the ledger widens to cover the visit never made, the apology never offered, the help someone saw was needed and declined. Catholic practice examines both columns, walking back through the day to name what was chosen and what was skipped.
Knowledge gives omission its weight. Conscience, the inner judgment that recognizes the good in front of a person, has already spoken, and overruling it is a choice. These failures are forgiven in confession like any others, and grace makes the next good act easier.

SUFISM
Iḥsān: doing good, and doing it well The Prophet described this as acting as if you can see God, knowing that He sees you anyway. Most of the good in front of us is plain enough: we know who needs the call, or what an apology would repair. When the picture is that clear, all the weight moves onto whether you get up.
Knowledge calls out for action, and if it gets no answer it leaves: unused knowing dulls Al-Ghazali repeats this line, and it names something ordinary that happens to people. Someone who keeps seeing the right thing and stepping around it stops seeing it as clearly; the excuses get smoother each round. After enough of that, they can say they didn't know and half believe it.
God most hates that you say what you do not do: the gap between what you hold and how you live The Quran puts it that bluntly, and Sufis have used it as a mirror ever since. The gap it points at is quiet and easy to live in, since nobody else can see the good you decided against. But you can see it, and living slightly out of line with yourself is what that gap feels like from the inside.
Taswīf: putting it off until later Ibn Ata Allah warned that postponing a good deed until you have more time is a soul fooling itself. Deferral feels harmless because a delayed good still counts as planned, and tomorrow always looks emptier than today. The intention stays warm while the deed never happens, so you keep the comfort of meaning well at no cost.
Muḥāsaba: taking honest stock of yourself Al-Ghazali describes going back over your day the way a shopkeeper goes over the books. Most of us count only what we did wrong, which leaves the whole column of things we saw and skipped unexamined. A reckoning that includes the good you passed over is uncomfortable, and it's also the only one that matches the day you had.
Catholic lens
What good have I already recognized and quietly set aside?
Marcus wrote that you can do wrong not only by acting but by failing to act, and that injustice includes the good you leave undone. The ledger is wider than most people keep it.
Krishna tells Arjuna that refusing to act is itself a kind of action with its own consequences, and that turning away from the duty in front of you does not keep your hands clean.
Hillel taught that if not now, then when, and that a person who separates himself from his community has already chosen something. The moment the good is clear, delay is an answer.

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