When the work of Christ is separated from the person of Christ, all you can be left with are either pure Pelagian or semi-Pelagian doctrines of salvation; as that becomes funded by some functional type of an adoptionistic christology (e.g., Ebionism etc.) This is why TFT refers to the Latin Heresy: he is referring to theologies, Western-Augustinian ones, that ultimately don’t think salvation, as both objectified and subjectivized in the Monarxia of God in the person of Jesus Christ. When this or that individual person is understood as being “elect” of God, based on an arbitrary and hidden decree of God, behind the back of Jesus, all a person can hope for is that they are indeed one of the elect, and hope that their good works (whatever those are supposed to be) are enough to demonstrate to their own hearts, and the hearts of others, that they are indeed one of those elect for whom Christ died. They have zero possibility of subjective self-knowledge of whether or not they are saved, even up until the end (ask William Perkins), because it is “their salvation,” and not God in Christ’s salvation for them. They have no rest, or possibility for actually resting in the finished work of Christ. They live in the shadow of the decretum absolutum (the supposed absolute decree of God’s predestination of certain people to salvation, and others [actively or passively] to eternal reprobation). Skubalon