An obligation with no deadline is a should, and a should has never fed anyone's household tonight.
Attach a time to a duty and it changes category. Everyone agrees a worker deserves his pay, and agreement by itself has never once put bread on a table, because a good intention waits for a convenient morning while a laborer's children eat tonight or they do not.
Sundown does the work that sincerity cannot. A clock that short exists because a poor man has set his heart on those coins, so the delay is hunger rather than an accounting matter, and the cry goes up to Yahweh, which makes this a standard somebody holds rather than a policy everybody approves. Leave a good intention undated and someone else pays for your timing.