'Generation' in the Bible

O generation, see ye the word of the LORD. Have I been a wilderness unto Israel? a land of darkness? wherefore say my people, We are lords; we will come no more unto thee?

Cut off thine hair, O Jerusalem, and cast it away, and take up a lamentation on high places; for the LORD hath rejected and forsaken the generation of his wrath.

Therefore the wild beasts of the desert with the wild beasts of the islands shall dwell there, and the owls shall dwell therein: and it shall be no more inhabited for ever; neither shall it be dwelt in from generation to generation.