@Ding an Sich,
I cannot imagine how it will ever be determined whether or not something has come from NOTHING. I must be a skeptic regarding such metaphysical notions such as "nothing-ness" and "thing-ness". Language exists (and we exist) because of its usefulness, indeed, its essential-ness. Words emerge and persist to the extent that they work to promote our survival (and other practical--and admittedly, decorative, tasks).
But just look at "nothing": in practical terms I might communicate to someone that there is "nothing" inside a particular box (viz. it is empty of objects). But here I am not suggesting the more metaphysical term, "nothingness," as if there were some kind of ontological "event horizon" within it. And my omission would be mainly because it would not be useful (or sensible) to do so.
Regarding "thingness", I cannot separate an essential thingness from its "accidental" properties. If I remove from an apple its perceived properties of roundness, redness, taste, weight, nutritional effects, etc. etc.would I be subtracting qualities from an actual abstract but propertyless "thing'?
As far as I can tell the "apple" is simply a collection of properties or experiences.*
*And as an aside (and--at a more mystical level--it is also
me since I am my experiences.
) is that "existence" is ephemeral and is evoked by ONLY by "thinking beings (Daseins) as as an aspect of their interactions. Indeed, I would say that what characterizes "thinking" is "thinging via language" and that includes the evocation of "self" and "objects". 
