וְשִׁלַּחְתִּ֨י לְבָבֶ֤ל ׀ זָרִים֙ וְזֵר֔וּהָ וִיבֹקְק֖וּ אֶת־אַרְצָ֑הּ כִּֽי־הָי֥וּ עָלֶ֛יהָ מִסָּבִ֖יב בְּי֥וֹם רָעָֽה׃
And I will send unto Babylon strangers, that shall fan her, And they shall empty her land; For in the day of trouble they shall be against her round about.
Read midrashic interpretation of Jeremiah 51:2: and classical rabbinic exegesis.