Charles Ellicott Commentary Isaiah 49:19

"For, as for thy waste and thy desolate places, and thy land that hath been destroyed, surely now shalt thou be too strait for the inhabitants, and they that swallowed thee up shall be far away." — Isaiah 49:19 (ASV)

Shall even now be too narrow. —Literally, with a vivid abruptness, thou shalt be ... The overpopulation of the future is contrasted with the depopulation of the past (Isaiah 3:6; Isaiah 4:1).