I am going to take the inquiries one or two at a time in separate posts.
HERE is a link to his sermon (pdf) titled, "The Doctrine of Original Sin," in which he explicitly upholds that doctrine and what we now call "Total Depravity." This is observable in his statements
HERE, "
From all these we learn, concerning man in his natural state, unassisted by the grace of God, that 'every imagination of the thoughts of his heart is' still "evil, only evil," and that "continually," and "
Were two infants in like manner to be brought up from the womb without being instructed in any religion, there is little room to doubt but (unless the grace of God interposed) the event would be just the same. They would have no religion at all: They would have no more knowledge of God than the beasts of the field, than the wild ass's."
One place Wesley affirms a state of grace that applies to all humans, including sinners in the unregenerate state, in the pdf is on page 10 where he discusses the state of sinful mankind. The word "preveient" is not found anywhere in the sermon, so the best way to track his case for prevenient grace is to hit ctrl-f and type in thhe word "grace," and then follow the sequence for every occasion where he uses that word. Wesley (commendably) uses a lot of scripture but he does not use it well. He commits the same errors every synergist makes: he applies verses written
about the already saved and applies them to the not-yet-saved, and he reads selected verses inferentially, with
eisegetic inference, understanding them to allude to a sinner's volitional agency when no such thing is explicitly stated in any of the verses referenced, cited, or quoted. For example, the "we" of the following passage are references to all humans,
not the saints.
"HENCE' it followeth, 1. That the abounding of God's grace, and the blessings by that Grace, doth not respect the Consequences of Adam's Sin, hath no Reference to his Transgression, but to the Grace of God and the Obedience of Christ." "The abounding of God's grace,” you inform us, “has Reference to the Grace of God.” Most sure. But this does not prove, that it has no Reference to the Consequences of Adam's Sin. If we gain more Blessing by Christ than we lost by Adam it is doubtless abounding Grace. But still, it has a Reference to Adam's Transgression, and the Consequences of it.
See page 116 and continue reading pages 17-18 and the group about which he is speaking becomes more apparent. He's talking about all humanity, not those already converted. Wesley bestows the potential of grace upon all humans, stating the grace of Christ is much larger than the disobedience (and its effects) of Adam, comparing the effects of sin on all humanity with the blessings of Christ, likewise, on all humanity. Monergism disagree. The blessings of Christ commensurate to Calvary are available and received by the saints alone, those in whom God works monergistically, not just any human who chooses Christ while still in the sinfully dead and enslaved (depraved) state.
However, and this is a very important matter, Wesley's view of prevenient grace
also applied to the saint
and was specifically tied to missions, Piety (capital "P"), and God overarching goal of reconciliation. Prevenient grace, for Wesley, is not simply applicable to
how a not-saved person becomes a saved person but also includes how the saved person stays saved. S/he accesses God's grace. The wording often sounds consistent with monergism but reading the assertions and arguments in their entirety reveals his mindset. For example, in Sermon 85 - "
On Working Out Our Own Salvation," he goes back and forth between the person saved, then unsaved, then saved.
Proceed we now to the Second point: If God worketh in you, then work out your own salvation. The original word rendered, work out, implies the doing a thing thoroughly. Your own; for you yourselves must do this, or it will be left undone forever. Your own salvation: Salvation begins with what is usually termed (and very properly) preventing grace; including the first wish to please God, the first dawn of light concerning his will, and the first slight transient conviction of having sinned against him. All these imply some tendency toward life; some degree of salvation; the beginning of a deliverance from a blind, unfeeling heart, quite insensible of God and the things of God. Salvation is carried on by convincing grace, usually in Scripture termed repentance; which brings a larger measure of self-knowledge, and a farther deliverance from the heart of stone. Afterwards we experience the proper Christian salvation; whereby, "through grace," we "are saved by faith;" consisting of those two grand branches, justification and sanctification.
Proper Christian salvation happens
after grace has convinced the person, repentance has occurred, and greater self-knowledge has been obtained.