Parallel
2 Chronicles 36:21
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
To fulfil the word of the Lord by the mouth of Jeremiah, until the land had enjoyed her sabbaths: for as long as she lay desolate she kept sabbath, to fulfil threescore and ten years.
So the land enjoyed its Sabbath rest all the days of the desolation, until seventy years were completed, in fulfillment of the word of the LORD spoken through Jeremiah (note: See Jeremiah 25:12 and Jeremiah 29:10.).