Folks, we have passive redefined, active redefined and intervene redefined. Words have meaning and when a whole group turns its back and offers inane arguments the discussion is over. The Red Sea according to natural processes would not part, so the parting was an intervention in the natural processes to achieve God purpose and plan.
Those that pretend not to get that have their own agenda.
The "b" model of theistic evolution seems closest to the truth to me, and it can be supported using words as defined in the dictionary. With active meaning active rather than passive, and intervention meaning an active intervention rather than non-intervention in natural processes.
Most arguments hinge in the last analysis on agreeing (or disagreeing) on definitions. As Assyrian says, if by "intervention" you mean "miracle" let's put that on the table.
While we are at it, let's look at the meaning of "miracle". It derives from a Latin word meaning "see" (a meaning it still has in Spanish; "Mira!" ="Look! See!") and the biblical terms it translates mean "sign". What is the point of a sign? It is to indicate something beyond itself. A miracle is that which in a special way points to the power and presence and care of God.
Interestingly, the bible does not make a sharp distinction between signs of a supernatural and a natural order. Some miracles of the bible (like making a donkey talk or an iron axhead float) would seem to involve an intervention which overturned or temporarily suspended the ordinary working of nature. Others, like the arrival of quails in the Israelite camp, seem not to need any change in the order of nature, but merely an organizing of a natural event towards God's purpose. Both are equally miracles.
And in some cases both types of miraculous intervention seem to work together, or it cannot be ascertained which was used.
It was only in late medieval and early modern times that the definition of miracle changed from the biblical emphasis on "sign" to an emphasis on a supernatural event which supercedes or suspends the natural order of things.
IMO we would do well to return to the biblical perspective, but if we do not, we could then set up two categories:
miracle: a sign effected through the suspension of the natural order e.g. the resurrection
intervention: a sign effected through the organization of the natural order to a special purpose. e.g. the plague of locusts in Egypt
What is important to note here is that both are special signs. Although one refers to supernatural means and the other to natural means, neither refers to the ongoing natural routine described to Noah (As long as the earth endures, seedtime and harvest, cold and heat, summer and winter, day and night shall not cease.)
IOW although the whole of creation is a sign of the creator, elements of ordinary process within creation are not unless they are especially used in order to be a meaningful sign to God's people for a particular purpose.
This brings us to the question of what is God's relation to the ordinary day-by-day processes of nature: those that we do not refer to as miracle or intervention?
The deist view is that God is absent from these ordinary processes.
Now Van wants to refer to this as one of God "passively sustaining" creation. I would like to see this validated by a standard reference to Deism. The references we have seen so far do not imply a sustaining presence, whether passive or active. They speak of God stepping aside, stepping back, withdrawing from involvement with creation, letting creation continue on its own without a divine presence.
In this view "natural" means "absence of God". And it is a short step from here to philosophic naturalism, which denies any sign of God in either sense given above. Nature is all there is. Nature excludes God. Hence there is no God. Or at least no God who has any relation to nature as we know it.
This is the view theists reject. God is always present to nature, in its ordinary day-to-day operations as much as in special signs.
I am not sure that the distinction between passive and active sustainor is valid. It seems an invention for the purpose of shoe-horning all ideas into a pre-conceived dualism of "a" and "b".
To describe the deity of Deism as a passive sustainor seems to attribute a presence of God to creation that Deism denies.
To describe a deity who intervenes as an active sustainor seems to conflate "sustaining" and "intervening" as a single action. But to me these seem to be quite separate actions.
Better I think not to hobble ourselves with only two choices, or at least two choices as Van has described.
When we look at the words "miracle" "intervention" "sustaining providence" and "natural process" we can see them cross-cutting to produce a spectrum of options.
Natural process occurs on its own without the action of a deity to originate or sustain it. (Naturalism)
Natural process needs a deity to originate it, but not to sustain it. (Deism)
Natural process is originated and constantly sustained by God (Theism)
Both Deism and Theism would probably agree that natural process originated through a direct supernatural action i.e. a miracle in the narrowest definition of the term.
So then the question remains, what of the ongoing process? Deism denies that it needs to be sustained. Van equates sustaining natural process with intervening in natural process. Most of the TEs here take the intermediate position that "sustaining" is not the same as "intervening".
Since we agree on rejecting the Deist view that nature is not sustained by the divine presence, the difference here comes down to the meaning of "intervention" and how it relates to "sustaining".
Do these words really have the same meaning, as Van suggests or do they imply different sorts of action on God's part?
Finally, let's note that the position that "sustaining" and "intervening" are not the same thing does not imply that God never intervenes in natural process. The evolutionary creationist who speaks of God's sustaining power upholding the order of nature also agrees that from time to time God also intervenes in a special way. But "intervention" is special and occasional; "sustaining providence" is continuous. And both call for God to be present in, under and through the natural order in a way that deism denies.
And lastly, to get back to the original question: does the initial emergence of life on earth require a special intervention or can it be encompassed within the continual sustaining providence of God i.e. within the natural order as it is?
The answer most of us have given to this question is that we do not know for sure one way or the other.