Isaiah 14:28-31

The date of the prophecy is here faithfully set down, in order that, when accomplished, it may not be suspected to have been written after the things predicted had come to pass. The year that Ahaz died. The same year that Uzziah died, Isaiah had that glorious vision, Isaiah 6:1; and the death of Ahaz was remarkable also in this burden, concerning Babylon. Isaiah forewarns Palestina not to rejoice at the death of the king, for others shall arise to punish.