Generosity decided in advance survives the days when a person does not feel like being generous.
Deciding once, ahead of the moment, removes the argument that would otherwise happen inside it, and the argument is where fear usually wins. The portion set aside before the need arrives leaves nothing to negotiate when it does.
Yahweh attaches the blessing to the work of the giver's hands rather than to the pile in the storehouse, because the thing being grown here is the person. Repeated action hardens into identity, and identity decides what someone will attempt for the rest of their life. Give only where repayment is possible and every exchange stays a transaction, and a man running transactions never stops counting what he is owed.