The phrase "final destiny" refers to the ultimate or last outcome or destination that someone or something is meant to reach. It indicates the end point or purpose that cannot be changed or altered. Full definition
[28] That is to say, that it must be capable of vaguely anticipating the future and final destiny of all creation in Christ. (faith.org.uk)
Jeremy, Jody Dillow dedicates a large portion of His book Final Destiny on exactly this topic. (redeeminggod.com)
Among the books he had us read were two that really challenged my thinking and helped me see certain key texts in a new light: They are The Epistle of James by Zane Hodges and The Reign of the Servant Kings by Joseph Dillow (a revised and updated edition of the book is now titled Final Destiny). (redeeminggod.com)