"and you shall gather in your corn, and your wine, and your oil": "your corn" — in abundance; "your wine" — in abundance; "and your oil" — in abundance. — But perhaps (the intent is that you shall gather all of them into one spot) because of their scarcity! It is, therefore, written (Vayikra 26:5) "And your threshing shall reach until the (grape) harvest." Just as with the (grape) harvest, once you begin, you cannot stop, (the very abundance of grapes making them susceptible to rot), so, with threshing, once you start, you will not be able to stop, (the abundance of the grapes making it susceptible to rot).