So the LORD will cut off Israel’s head and tail, both palm branch and reed in a single day.
14. Therefore the Lord will cut off from Israel. He intimates that God’s vengeance will be universal, and will involve all ranks; for the whole nation was corrupted, and the contagion had spread over the whole country, to such an extent that no part was left whole or sound.
Here are terrible threatenings, which are directed primarily against Israel, the kingdom of the ten tribes, Ephraim and Samaria, the ruin of which is here foretold, with all the woeful confusions that were the prefaces to that ruin, all which came to pass within a few years after; but they look further, to all the enemies of the throne and kingdom of Christ the Son...
Commenting on Isaiah 9:8-21
Therefore the Lord will cut off from Israel head and tail,.... The former of these is afterwards interpreted of "the ancient and honourable", men in high places, civil magistrates, judges, governors, and elders of the people, the king as supreme, and all subordinate officers; and so the Targum, "the Lord will destroy from Israel the prince and the ruler;'' and the latter is interpreted of the false prophet.