Albert Barnes Commentary Jeremiah 30:16

"Therefore all they that devour thee shall be devoured; and all thine adversaries, every one of them, shall go into captivity; and they that despoil thee shall be a spoil, and all that prey upon thee will I give for a prey." — Jeremiah 30:16 (ASV)

Therefore - that is, because you have undergone your punishment and cried out in consciousness of your guilt.