isaiah 7:16 For before the child shall know to refuse the evil, and choose the good, the land that thou abhorrest shall be forsaken of both her kings. - Free Bible Online

      16. For--The deliverance implied in the name "Immanuel," and the cessation of distress as to food (Isa 7:14, 15), shall last only till the child grows to know good and evil;
      for . . . the land that . . . abhorrest . . . forsaken of . . . kings--rather, desolate shall be the land, before whose two kings thou art alarmed [HENGSTENBERG and GESENIUS].
      the land--namely, Syria and Samaria regarded as one (2Ki 16:9; 15:30), just two years after this prophecy, as it foretells. HORSLEY takes it, "The land (Judah and Samaria) of (the former of) which thou art the plague (literally, 'thorn') shall be forsaken," &c.; a prediction thus, that Judah and Israel (appropriately regarded as one "land") should cease to be kingdoms (Lu 2:1; Ge 49:10) before Immanuel came.

JFB.