isaiah 10:15 Shall the axe boast itself against him that heweth therewith? or shall the saw magnify itself against him that shaketh it? as if the rod should shake itself against them that lift it up, or as if the staff should lift up itself, as if it were no wood. - Free Bible Online

      15. Shall the instrument boast against Him who uses it? Through free in a sense, and carrying out his own plans, the Assyrian was unconsciously carrying out God's purposes.
      shaketh it--moves it back and forward.
      staff . . . lift . . . itself . . . no wood--rather, "as if the staff (man, the instrument of God's judgments on his fellow man) should set aside (Him who is) not wood" (not a mere instrument, as man). On "no wood" compare De 32:21, "that which is not God;" Isa 31:8 shows that God is meant here by "not wood" [MAURER].

JFB.