KJV:
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.
NASB:
A day of darkness and gloom, A day of clouds and thick darkness. As the dawn is spread over the mountains, So there is a great and mighty people; There has never been anything like it, Nor will there be again after it To the years of many generations.