Adam Clarke on Proverbs 20:4

The sluggard will not plough - For other parts of this character, see the preceding chapter, Proverbs 19 (note). It is seldom that there is a season of very cold weather in Palestine; very cold days sometimes occur, with wind, rain, and sleet. They begin their ploughing in the latter end of September, and sow their early wheat by the middle of October. And this is often the case in England itself. The meaning of the proverb is: the slothful man, under the pretense of unfavorable weather, neglects cultivating his land till the proper time is elapsed.