Jeremiah recalls God's promise that the people of Israel would be preserved and eventually restored (Jeremiah 31:37; 46:28), though all he could see at the moment was devastation.

Source:

KJV Defenders Study Bible, by Dr. Henry Morris, Ph.D.
Publisher: Thomas Nelson
Language: English
DEF 10 ISBN 0-529-10444-x
DEF 10-1 ISBN 0-529-10445-8