I. That an end shall be put to Zion's troubles (v. 22): The punishment of they iniquity is accomplished, O daughter of Zion! not the fulness of that punishment which it deserves, but of that which God has designed and determined to inflict, and which was necessary to answer the end, the glorifying of God's justice and the taking away of their sin. The captivity, which is the punishment of thy iniquity, is accomplished (Isa. xl. 2), and he will no longer keep thee in captivity; so it may be read, as well as, he will no more carry thee into captivity; he will turn again thy captivity and work a glorious release for thee. Note, The troubles of God's people shall be continued no longer than till they have done their work for which they were sent.