Thomas Aquinas, on Job 17:1

“My spirit shall be wasted, my days shall be shortened, and only the grave remaineth for me.”

“Job had shown above the great number of his afflictions, (16:14) the humiliation of his mind, (16:16) the innocence (16:18) and the brevity of a life definitively lost, (16:23) and by which the wordiness of his friends is conclusively proved. In this chapter then he intends to prove the premises and finally conclude their ignorance. (v.10) First he begins to prove what he had said about the process of human life, and he presents beforehand the cause of the shortness of life, when he says, "My spirit will be weakened." For the life of the body is lived through vital spirits which are diffused from the heart to all its members. The body lives as long as they are strong in the body. But when the natural caloric power (energy) begins to grow weak in the heart, such spirits grow less. By this growing less and debilitation he, of course, means the weakening of the spirit. He then states the effect of this cause saying, "my days will grow shortened." For weakness of the vital spirit shortens the days of life. To answer the objection that a spirit once weakened would again be strengthened again according to kind of existence of this mortal life, he says, "nothing remains for me but the tomb," as if to say: Once the span of this present life is finished, nothing of this present life remains for me except the grave and those things which befit the grave.”

Imported from an open dataset — not yet checked against the printed edition.