what you’re saying is that the definitions don’t change
No, since that wouldn’t be true; definitions do change.The essence of something does not change; it is what it is as long as it is. With transubstantiation, we do witness not so much a change as the ending of one thing, the bread, into something else, the body and blood of our Lord.
Yet, it doesn’t get us to the point you’re trying to reach, does it?
The point I am trying to reach is the communication of a system of ideas which clarify the nature of reality centred on Existence, which is Love, which is God. So, you are quite correct.
Things change. They become other things.
They do and they don’t depending on how we define a thing. Physical events happen, existing within a realm of structure and interactions that we can describe in terms of the laws of nature. While the laws that we discern may change, supplanted by others with greater explanatory value, the underlying reality does not. There exist immutable essences behind the world of appearances. And, those essences are brought into existence in their moment from eternity by God.
Atoms, and I am speaking about the reality to which our concept points, exist presumably as themselves, consisting of a number of properties that “define”, i.e. make them what they are, in time and space and account for their behaviour and interactions.
If we look at the world, especially that which includes our being, which we shouldn’t ignore since that is how we are able to understand, we see that there are structures and processes that go beyond those of simple matter They include replication, growth, movement, sight, sound, touch, fear, pleasure, pain, and thought itself. We note that in these cases, what is happening involves a more sophisticated relationship between a thing and its environment than we find in a simple atom, being itself and doing its thing.
but atoms can come together and form bacteria, or dirt, or people… no?
I don’t see atoms as “coming” together as much as they are “brought” together within an organizing priniciple that is the actual existence of bacteria and people, created by God. Matter is but one layer of the organization that constitutes a living being, the perceptual tip of the iceberg of the unity that is a life form. The molecules of which bacteria and we ourselves are made cannot by their inherent properties produce a living thing. Their enzymes for example, necessary to bring molecules together for vital cellular structures and processes have a history that goes back to an original cell. That cell possessed a “soul” that contained the matter which played out its codes resulting in growth, replication and everything required to make that possible.
Replaying human history to its beginnings, I see the creation of an original man, whose DNA was not given to him through the fertilization of an hominid egg by a hominid sperm, but rather God Himself - His and our father.