I will pull down my barns - The word “barns” here, properly means, “granaries,” or places exclusively designed to put wheat, barley, etc. They were commonly made, by the ancients, “underground,” where grain could be kept a long time more safe from thieves and from vermin. If it be asked why he did not let the old ones remain and build new ones, it may be answered that it would be easier to “enlarge” those already excavated in the earth than to dig new ones.
Related Commentaries of Luke 12:18
Luke 12:18
18 And he said, This will I do: I will pull down my barns, and build greater; and there will I bestow all my fruits and my goods.