Matthew Poole and continuators on Jeremiah 31:21

21 Set thee up way-marks , make thee high heaps : set thine heart towards the high-way, even the way which thou wentest : turn again, O virgin of Israel, turn again to these thy cities .

The latter part of this verse expounds the former. Thou shalt (saith God) return again to these Cities which thou now leavest, therefore take good notice of the way thou goest, set up [illegible: 1 letter]ome marks by which thou mayest know it again.

Make thee Pillars or some high heaps of Stone in the way, which thou mayest know again when thou comest at them.

Mind well the way that the Assyrians and the Babylonians carried thee, for thou shalt come back the same way.

Further to assure them they should return, he calls to them to turn again, and doubleth his words, for the further confirmation of the thing.