2 Chronicles 36:21
To fulfill the word of the LORD by the mouth of Jeremiah, until the land had enjoyed its sabbaths: for as long as it lay desolate it kept sabbath, to fulfill threescore and ten years.
And this whole land shall be a desolation, and an astonishment; and these nations shall serve the king of Babylon seventy years.
And it shall come to pass, when seventy years are accomplished, that I will punish the king of Babylon, and that nation, says the LORD, for their iniquity, and the land of the Chaldeans, and will make it perpetual desolations.
For thus says the LORD, That after seventy years are accomplished at Babylon I will visit you, and perform my good word toward you, in causing you to return to this place.
In the first year of his reign I Daniel understood from the books the number of the years, of which the word of the LORD came to Jeremiah the prophet, that he would accomplish seventy years in the desolations of Jerusalem.
Then the angel of the LORD answered and said, O LORD of hosts, how long will you not have mercy on Jerusalem and on the cities of Judah, against which you have had indignation these threescore and ten years?
Speak unto all the people of the land, and to the priests, saying, When you fasted and mourned in the fifth and seventh month, even those seventy years, did you at all fast unto me, even to me?
The days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labor and sorrow; for it is soon cut off, and we fly away.
And it shall come to pass in that day, that Tyre shall be forgotten seventy years, according to the days of one king: after the end of seventy years it shall happen to Tyre as in the song of a harlot.
And it shall come to pass after the end of seventy years, that the LORD will visit Tyre, and she shall return to her hire, and shall commit fornication with all the kingdoms of the world upon the face of the earth.