'Generation' in the Bible

O generation, mark ye the word of Jehovah. Have I been a wilderness unto Israel, or a land of thick darkness? Wherefore say my people, We have dominion; we will come no more unto thee?

Cut off thy hair, and cast it away, and take up a lamentation on the heights; for Jehovah hath rejected and forsaken the generation of his wrath.

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