'Seventy Years' in the Bible

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 be to Tyre as in the song of the harlot:

And it came to pass after the end of seventy years, that LORD examined Tyre, and she has repented of her gift, that she play the harlot with all the kingdoms of the world upon the face of the earth.