Had enjoyed her sabbaths, i.e. had rested from the labour of the husbandmen in ploughing and harrowing it, &c., the people that should have managed it being destroyed. Of the phrase, See Poole on "Leviticus 25:2". To fulfil threescore and ten years; that so the seventy years captivity prophesied of by Jeremiah might be accomplished.
Related Commentaries of 2 Chronicles 36:21
2 Chronicles 36:21
21 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.