לְמַלֹּ֤אות דְּבַר־יְהוָה֙ בְּפִ֣י יִרְמְיָ֔הוּ עַד־רָצְתָ֥ה הָאָ֖רֶץ אֶת־שַׁבְּתוֹתֶ֑יהָ כָּל־יְמֵ֤י הָשַּׁמָּה֙ שָׁבָ֔תָה לְמַלֹּ֖אות שִׁבְעִ֥ים שָׁנָֽה׃ (פ)
to fulfil the word of the LORD by the mouth of Jeremiah, until the land had been paid her sabbaths; for as long as she lay desolate she kept sabbath, to fulfil threescore and ten years.
Read midrashic interpretation of II Chronicles 36:21: and classical rabbinic exegesis.