2 Chronicles 36:19-21

19Then they burned the house of God, broke down the wall of Jerusalem, burned all its palaces with fire, and destroyed all its precious possessions.

20And those who escaped from the sword he carried away to Babylon, where they became servants to him and his sons until the rule of the kingdom of Persia,

21to fulfill the word of the Lord by the mouth of Jeremiah, until the land had enjoyed her Sabbaths. As long as she lay desolate she kept Sabbath, to fulfill seventy years.