'Seventy' in the Bible

It will come to pass in that day that Tyre will be forgotten seventy years, according to the days of one king. After the end of seventy years it will be to Tyre like in the song of the prostitute.

It will happen after the end of seventy years that Yahweh will visit Tyre, and she shall return to her wages, and will play the prostitute with all the kingdoms of the world on the surface of the earth.