So shall my word; my promises before recited concerning the sending of the Messiah, and the blessing of his labours with such wonderful success, and concerning the reconciliation and pardon of the greatest sinners, and concerning the redemption and salvation of his people. It shall not return unto me void; without success. It is an allusion to an ambassador who returns without despatching that business for which he was sent. It shall prosper in the thing whereto I sent it; it shall have that effect which I intended; it shall certainly be fulfilled in manner before expressed.
Related Commentaries of Isaiah 55:11
Isaiah 55:11
11 So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.