NET

2 It will be a day of dreadful darkness, a day of foreboding storm clouds, like blackness spread over the mountains. It is a huge and powerful army—there has never been anything like it ever before, and there will not be anything like it for many generations to come!

Darby

2 a day of darkness and gloom, a day of clouds and gross darkness, as the dawn spread upon the mountains; a great people and a strong; there hath not been ever the like, neither shall be any more after them, to the years of generations and generations.

KJV

2 A day of darkness and of gloominess, a day of clouds and of thick darkness, as the morning spread upon the mountains: a great people and a strong; there hath not been ever the like, neither shall be any more after it, [even] to the years of many generations.