'Ever' in the Bible

Hear this, you elders;listen, all you inhabitants of the land.Has anything like this ever happened in your daysor in the days of your ancestors?

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.

And you will be certain that I am the Lord your God, living in Zion, my holy mountain: and Jerusalem will be holy, and no strange person will ever again go through her.

But Judah shall dwell for ever, and Jerusalem from generation to generation.