For the seller shall not return to that which is sold, although they were yet alive: for the vision is touching the whole multitude thereof, which shall not return; neither shall any strengthen himself in the iniquity of his life.
The seller shall not return to that which is sold, although they were yet alive - although they should live to the year of jubilee.
The vision is touching the whole multitude thereof - namely, the whole multitude of the Jews.
Which shall not return - answering to "the seller shall not return;" not only he, but the whole multitude, shall not return. Calvin omits is and which, 'The vision touching the whole multitude shall not return' void (Isaiah 55:11).
Neither shall any strengthen himself in the iniquity of his life - no hardening of one's self in iniquity will avail against God's threat of punishment. Fairbairn translates, 'no one by his iniquity shall invigorate his life,' referring to the jubilee, which was regarded as a revivification of the whole commonwealth, when, its disorders being rectified, the body politic sprang up again into renewed life. What God thus provided for by the institution of the jubilee, and which is now to cease through the nation's iniquity, let none think to bring about by his iniquity.