Tentatively Christian; looking for a reasonable discussion

[Neo-Scholastic]

Anyone can see that things preserve their identity throughout change. This the basic observation analysed by means of reason.

The idea that objects have an "identity" to be retained? Your assertion.

So you believe it mere assertion when someone says that the acorn and the resulting full grown oak are the same tree?

… the claim that things preserve their identity through change is simply false; coal becomes diamonds, sand becomes glass, all kinds of objects change form into something unrecognizeable…

Of course a thing can stop being one thing when a new thing is created. In the meantime they persist as whatever it is that they are. When a child blows a soap bubble out of soapy water something new with a distinct nature is created. Even though it can change size, direction, and temperature, it nevertheless preserves its existence as a soap bubble despite such changes. But when it pops, the soap bubble ceases to exist. Physical things, to which I refer as sensible bodies, have substance, form, origin, and disposition. By making note of these features anyone can distinguish between a soap bubble and a drop of soapy water…except you, apparently.