Buddhist monasticism can serve as a vehicle for "emptying-out" the inner conditioning that arises from greed, hatred and delusion - as such - religion (and religious differences - including atheism and non-theism) does not have to enter into it. I suspect the ancient Greeks encountered Buddhist monasticism when visiting India (such as Pythagoras), learned the Buddhist method of "looking within", and then adjusted the technique as a means to "prove" the efficacy of their particular philosophical perspectives (the work of Plotinus may be taken as an example of this endeavour). Later, via the Greeks, a community of Jews (in Qumran) started sitting in meditation to personally attain a "glimpse of Yahweh" - a practice that eventually spread to the reformed Jewish sect of "Christianity" - whose adherents started to meditate whilst sat in the caves found in the Egyptian Desert (this type of Christianity spread to Britain - hundreds of years prior to Catholicism - becoming "Celtic Christianity").
Buddhist monasticism does not require a belief in theism to be effective. Many Greek schools of thought, for instance, sought to establish or discover various views pertaining to the natural (material) world. The same observation can be applied to various Hindu school where consciousness and material environment is not directly associated with a theistic entity. Whatever the case, protecting the psychological and physical space within which a martial artist exists - is the entire purpose of any traditional Chinese martial arts school. Young or old - this is the beginning, middle, and end of legitimate Chinese martial practice! ACW (18.4.2025)