Shall the Lord shave with a razor that is hired; rather, with the hired razor; i.e. the razor that Ahaz will have hired (2 Kings 16:8). The metaphor well expresses the stripping of the land bare by plunder and exaction (comp.
Ezekiel 5:1, Ezekiel 5:12, and 2 Chronicles 28:19-21). God would use Tiglath-Pileser as his instrument to distress Ahaz. By them beyond the river; or, in the parts beyond the river. "The river" is undoubtedly the Euphrates, and they who dwell beyond it the Assyrians.
By the King of Assyria. Once more a gloss is suspected, as in Isaiah 7:17. The meaning would certainly be sufficiently plain without the clause. The head … the hair of the feet … the beard. These three represent all the hair on any part of the body.
Judah is to be completely stripped.