NOTES for Heb 10:34
One of the most important principles of a Christian's spiritual life is called non-possessiveness in the language of the Eastern monastic tradition. The Western tradition calls non-possessiveness poverty and limits it by reducing it to a certain material state. However, if poverty is understood as Isaiah of Jerusalem, for example, understood it, then it could quite well be called non-possessiveness.
Incidentally, Isaiah's fate can serve as an illustration of the author's words, although this prophet lived eight centuries before the Savior's coming: being an aristocrat and a rich man, he called himself a poor man, and at the end of his life, during persecution, he really did lose everything. There are even not entirely clear reports that the prophet ended his life as a martyr. This sense of oneself as a poor man regardless of the size of one's own property is what is called non-possessiveness. In such a spiritual state, the loss of that property is truly not perceived as a catastrophe.
A person then really understands that the main thing for him is not property, or at least not the property he has on earth. And this is not some refusal, self-limitation, poverty for the sake of freedom, or anything of the sort. Here it is simply life in the Kingdom as such. In a reality that is arranged differently from our untransfigured world. And for a person precisely this reality becomes genuine and absolute. Of course, in such a case a person does not necessarily have to lose everything: monastic practice, whether in the East or in the West, only brings outward what may remain inward.
The issue is precisely one's attitude toward one's own property. It is perceived not as a more or less inseparable part of one's beloved self, but as a God-given instrument for carrying out tasks also set by God. An instrument that one does not own, but uses. And even if this instrument is taken from you and God does not intervene, this means that His plan does not include intervention. Perhaps these instruments will no longer be needed. Or God has prepared others. In any case, He knows better. And His servants need not worry: it is His world and His plan.