2 Chronicles 36:20-21

20Nebuchadnezzar took away to Babylon all the people in Jerusalem who were still alive. They worked as slaves for him and for his sons until the kingdom of Persia became powerful.

21In this way, the Lord's message that his prophet Jeremiah had spoken became true. The land of Judah was empty for 70 years. It was finally able to rest, like the rest on a Sabbath day.