Seeing his days [are] determined, the number of his months [are] with thee, thou hast appointed his bounds that he cannot pass;
Ver. 5. Seeing his days are determined, &c.] God hath set every man both his time (whether shorter, called here his days, or longer, the number of his months, they have both their bounds which none can pass) and also his task, Acts 13:25. John fulfilled his course, et in brevi vitae spatio tempora virtutum multa replevit, and he lived long in a little time; he wrought hard, as not willing to be taken with his task undone (Hieron.). So Acts 13:36. David, after he had served his own generation, and had done all the will of God, fell on sleep. See more of this on Job 7:1 .
Thou hast appointed his bounds] Heb. His statutes. It is appointed for all men once to die, Hebrews 9:27, once for all, and for ever it is appointed, and this statute is irrepealable. Here then we see the cause why some, likely to live long, die soon, and others more infirm live longer. God hath set the bounds of each one's life to a very day. The bounds may be passed which our natural complexion setteth; the bounds cannot be passed which the providence and will of God setteth. Stat sua cuique dies - (Virg.).