Isaiah threatens “days” against Ahaz worse than anything that has happened since Israel and Judah separated (7:17). King, people, and dynasty are threatened by these coming “days.”

At the end of the verse, in apposition to the warning about coming “days,” Isaiah names the “days”: “the king of Ashur.” The days are defined by numbers here, or by clocks. The coming of the king of Ahsur is the coming of days of tribulation.

Rosenstock-Huessy would be happy: Men make days.