Job 21:21

For what pleasure hath he in his house after him - What may happen to his posterity he neither knows nor cares for, as he is now numbered with the dead, and numbered with them before he had lived out half his years. Some have translated the verse thus: "Behold how speedily God destroys the house of the wicked after him! How he shortens the number of his months!"

For what pleasure hath he ... - That is, what happiness shall he have in his family? This, it seems to me, is designed to be a reference to their sentiments, or a statement by Job of what "they" maintained. They held, that a man who was wicked, could have none of the comfort which he anticipated in his children, for he would himself be cut off in the midst of life, and taken away.

When the number of his months is cut off in the midst? - When his "life" is cut off - the word "months" here being used in the sense of "life," or "years." This they had maintained, that a wicked man would be punished, by being cut off in the midst of his way; compare Job 14:21.

21:21 For, &c. - What delight can ye take in the thoughts of his posterity, when he is dying an untimely death? When that number of months, which by the course of nature, he might have lived, is cut off by violence.