isaiah 38:12 Mine age is departed, and is removed from me as a shepherd's tent: I have cut off like a weaver my life: he will cut me off with pining sickness: from day even to night wilt thou make an end of me. - Free Bible Online

      12. age--rather, as the parallel "shepherd's tent" requires habitation, so the Arabic [GESENIUS].
      departed--is broken up, or shifted, as a tent to a different locality. The same image occurs (2Co 5:1; 2Pe 1:12, 13). He plainly expects to exist, and not cease to be in another state; as the shepherd still lives, after he has struck his tent and removed elsewhere.
      I have cut off--He attributes to himself that which is God's will with respect to him; because he declares that will. So Jeremiah is said to "root out" kingdoms, because he declares God's purpose of doing so (Jer 1:10). The weaver cuts off his web from the loom when completed. Job 7:6 has a like image. The Greeks represented the Fates as spinning and cutting off the threads of each man's life.
      he--God.
      with pining sickness--rather, "from the thrum," or thread, which tied the loom to the weaver's beam.
      from day . . . to night--that is, in the space of a single day between morning and night (Job 4:20).

JFB.