Lamentations 1:21

They are glad that thou hast done it... — Historically the words refer to the conduct of nations like the Edomites, as described in Psalms 137:7.

Thou wilt bring the day that thou hast called. — Better, proclaimed. By some commentators the first verb is taken as a perfect, “Thou hast brought,” and the “day” is that of vengeance upon Judah. With the rendering of the Authorised version the clause coheres better with that which follows, and the “day” is that of the punishment of the exulting foes.