'Seventy' in the Bible

And all this land will become a site of ruins, a desolation, and these nations will serve the king of Babylon seventy years.

{And then} when [the] seventy years [are] fulfilled, I will punish the king of Babylon and that nation,' {declares} Yahweh, 'for their iniquity, and [the] land of [the] Chaldeans, and I will make it {an everlasting waste}.

For thus says Yahweh, '{As soon as the time has passed}, seventy years for Babylon, I will attend to you, and I will fulfill my good word to you, to bring you back to this place.