Thy sons... beget — i.e., thy descendants. Comp, the fulfilment (Daniel 1:3). Ewald refers to the captivity of Hezekiah’s own son Manasseh (2 Chronicles 33:11).
Eunuchs. — Rather, courtiers, palace attendants (so Josephus). Cheyne, “chamberlains” (so Thenius: kämmerer).