'Generation' in the Bible

O generation, see the word of the Lord. Have I been a waste land to Israel? or a land of dark night? why do my people say, We have got loose, we will not come to you again?

Let your hair be cut off, O Jerusalem, and let it go, and let a song of grief go up on the open hilltops; for the Lord is turned away from the generation of his wrath and has given them up.

For this reason the beasts of the waste land with the wolves will make their holes there and the ostriches will be living in it: never again will men be living there, it will be unpeopled from generation to generation.