It seems like your question involves two parts
(1) that what we are made of originated through processes that go on within stars; i.e., we are made of stardust (so to speak). That is largely answered already. As a scientist, that surely has never troubled me. Some of the carbon in our bodies was once perhaps part of a dinosaur – plants grow, they get eaten passing carbon up the food chain and eventually, the carbon goes back into the ground to grow new plants. … and so on.
(2) Abiogenesis: I am not an expert on the topic, but my work is in the area of RNA research (and more recently chromatin) so I spend part of my time as a scientist working on questions like this. Science studies processes. Process says nothing about the existence of God. For example, I can explain the formation of salt from salt water or seawater with the chemical mass balance equation Na+aq + Cl-aq <-> NaClcrystal. However, even though I have described it by some expression, there is no connection between this description and the existence of God. [Granted, I’m using hyperbole – resorting to the reductio ad absurdum – but hopefully, my point for doing this is not missed in the process.] If God made the universe (or multiverse or whatever the physical world is), it is also within God’s purview to decide a rational, discernable universe where the properties of matter could be understood by rational beings who live in it. Hence, whatever we can observe and whatever we can measure follows discernable rules; at least, as scientists, we expect that this is so, but knowing these processes in-of-themselves do not say “there is no God”. That is facile thinking.
Abiogenesis is an effort at understanding how such a process as converting the “non-living” elements into a “living” organism could have happened. It is kind of amazing that the soot in a chimney is part of the stuff that makes life, but the stuff in the chimney can be used in part as compost and feed to the plants in a garden, or in agriculture proper and so forth. Hence, we can understand that living organisms absorb that carbon and use it to grow.
What has definitely been accomplished so far is to say that simple amino acids and the essential bases composing nucleic acids can definitely form as byproducts of chemical reactions in a “soup” of organic chemicals. The types of products depend largely on a particular “environment”, and some of them are quite incompatible with each other. What is difficult to explain, and as far as I know unexplained (though I could be wrong), is how exactly the bases of nucleic acids might bind selectively to a ribofuranosyl sugar to form the actual nucleic-acids comprising RNA (or deoxyribofuranosyl for DNA), and, how these, in turn, can self-select and self-assemble into a functioning enzyme of any real reproducible capability and self-replicate itself. So there is a lot we really don’t know.
Perhaps your question is more about how to understand scientific findings. Suppose that I could dream up some process in which the non-biologically functional elements (H, C, N, P, O, S, etc.) could somehow self-assemble into a functioning self-splicing ribozyme (a known RNA enzyme). Let’s say that I walked into the lab and shook a test tube and out came life, at least this ribozyme. It would be quite a quantum leap of understanding and would make the argument for abiogenesis a lot more acceptable. Would I then unequivocally jump to “sit in the seat of mockers” (Ps 1)? Simply and emphatically “No”. [Footnote: For clarity, I hardly have the remote level of skill it would take to actually accomplish this whole task, but just for the mere sake of argument.]
We are the clay and God is the potter. The question of how God made us is not something we can complain about; whether it is a 6-day 24-hour plan or the completely explainable process plan. So as one who has thought deeply about the matter and accepted the concept of evolution, even if I end up at the pearly gates and find out that the former plan was correct, well, I have no idea how it would fit together with my observations, but I am sure that there will be a very good explanation. Conversely, if evolution is basically correct, you too will receive an acceptable explanation.
The thing is, science is the simpler thing to work out, even if the puzzles it offers are so hard that no one can figure them out. Science looks at processes. At some level, everything is “processes”, so in that vague notion, even abiogenesis can be assumed to be reducible to processes – even if we have no idea what they are. This is why people who believe in their scientism have so much faith in abiogenesis. There surely is some process that could (in principle) explain how you can get from the simple chemical elements to some living organism.
[Footnote: Now that I have drifted away from a strict description of processes to matters of faith, I think it is important to make another point here. When speaking as a scientist, I think we (scientists) should refrain from words like “believe”. We should use words like “accept” or “reject”; as in “I accept evolution”. I believe in God. This is a matter of my faith, not a subject of science. My faith in God expresses a much larger worldview than science alone can address (in my opinion). Scientism is also a “worldview” – one that limits understanding to that that can be expressed by scientific language. Whose view is right might be a matter of serious discussion, but whatever the answer, it is no longer a matter of science and is more a subject of philosophy. Consequently, as a scientist, I don’t say “I believe in evolution”; rather, I say “I have examined the concept of evolution and found its arguments sufficiently persuasive, so I accept it.” Therefore, I think it important to emphasize that my point about God is not a matter we can resolve by depending on science (in my opinion); rather, for that, we just have to turn to faith.]
Getting back to my point, yes, “stuff” is the “bread” that we live on. We may be able to explain what material is; perhaps we can even explain it completely. However, man does not live by bread alone. We are rational beings who can choose to do right or wrong. This is where I think the question about Jesus becomes important. C.S. Lewis writes in “The Abolition of Man”:
I am not here thinking solely, perhaps not even chiefly, of those who are our public enemies at the moment. The process which, if not checked, will abolish Man goes on apace among Communists and Democrats no less than among Fascists. The methods may (at first) differ in brutality. But many a mild-eyed scientist in pincenez, many a popular dramatist, many an amateur philosopher in our midst, means in the long run just the same as the Nazi rulers of Germany/Traditional values are to be “debunked” and mankind to be cut out into some fresh shape at the will (which must, by hypothesis, be an arbitrary will) of some few lucky people in one lucky generation which has learned how to do it. The belief that we can invent “ideologies” at pleasure, and the consequent treatment of mankind as mere υλη [i.e., matter, stuff, material, substance], specimens, preparations, begins to affect our very language. Once we killed bad men: now we liquidate unsocial elements. Virtue has become integration and diligence dynamism, and boys likely to be worthy of a commission are “potential officer material”. Most wonderful of all, the virtues of thrift and temperance, and even of ordinary intelligence, are sales-resistance [the ability or inclination to refuse to buy a product, service, etc., offered].
… Indeed, sin is (usually) not where I deliberately plan to achieve maximum evil, I just want to make things a little more favorable for myself. Nothing big, just a little bit. Soon, I find that I have to tweak things – just a little bit, of course. This goes on, and little-by-little, so it goes. If I push the game too far, one day, I am seen being led away by the police, and people all say “how could this happen? Wayne is such a bad guy! Isn’t he also a Christian?”. … ouch … It all begins with those pesky “little things”. This is maybe why Jeremiah writes in Lamentations “It is good for a man to bear the yoke while he is young” (La 3.27).
We should think a lot more about how we tweak things, even innocent-seeming things. Though obviously, sometimes change can be for the good, there can be many unforeseen consequences to seemingly innocent changes. The thing is, we need God’s hand in our lives because we cannot see far and even with the best intentions, we cannot see far ahead to the consequences of our decisions. This is why we pray “lead us not into temptation but deliver us from evil”. In the eyes of eternity, no one by God can lead us.
I would say that abiogenesis is not really the problem for faith in God. That is simply challenging our perspective about God. The heavens and the earth still speak to the glory of God, whether abiogenesis is true or not. Indeed, to me, they might even speak more loudly because we have a world in which even the elements themselves have the fecundity of self-assembling into life. What a mindbogglingly amazing creation. Indeed, “good” is not a good enough word for it. The important thing as scientists is that we be keenly aware of our proclivities to control and manipulate things without the wisdom to grasp the consequences. If we sell our soul to scientism, we will have gained the whole world but forfeited our soul, the very thing that makes us human.
– by Grace we proceed
[edits include spelling, redaction and rewriting for readability and clarity of point.]