4. Out of him--Judah is to be no more subject to foreigners, but from itself shall come its rulers.
      the corner--stone, Messiah (Isa 28:16). "Corners" simply express governors (1Sa 14:38, Margin; Isa 19:13, Margin). The Maccabees, Judah's governors and deliverers from Antiochus the oppressor, are primarily meant; but Messiah is the Antitype. Messiah supports and binds together the Church, Jews and Gentiles.
      the nail-- (Jud 4:21; Isa 22:23). The large peg inside an Oriental tent, on which is hung most of its valuable furniture. On Messiah hang all the glory and hope of His people.
      bow-- (Zec 9:13). Judah shall not need foreign soldiery. Messiah shall be her battle-bow (Ps 45:4, 5; Re 6:2).
      every oppressor--rather, in a good sense, ruler, as the kindred Ethiopic term means. So "exactor," in Isa 60:17, namely, one who exacts the tribute from the nations made tributary to Judah [LUDOVICUS DE DIEU].

JFB.