The Lord’s flock - The people carried away captive with Jeconiah formed the Jewish Church, as we are expressly told, whereas Zedekiah and the people of Jerusalem possessed only the externals of the Church and not its reality. It is for this reason that the seventy years’ exile counts from Jeconiah’s captivity.
Related Commentaries of Jeremiah 13:17
Jeremiah 13:17
17 But if ye will not hear it, my soul shall weep in secret places for your pride; and mine eye shall weep sore, and run down with tears, because the LORD'S flock is carried away captive.