Unrestricted by Space: The Ethereal Domain of Demons
The assertion that "demons find no space within themselves" can be explained by the idea of their immaterial, bodiless nature. According to one source, "Maybe, maybe, because demons are not material, these bodiless spirits do not occupy space; maybe an unlimited number of them can fit in one place—in the human heart." (source: link txt). This means that demons do not require physical space to exist, and they can infiltrate the human consciousness and heart, where physical limitations do not apply.
Another text emphasizes that demonic possession often manifests not through a tumultuous state, but through a quiet, imperceptible infiltration, especially when a person consciously or unconsciously rejects the spiritual: "Demons inhabit the human heart..." (source: link txt). Thus, one reason for this perception lies in the inner state of a person—their attitude towards spirituality and their readiness to perceive the unseen aspects of existence—which creates "fertile ground" for demons, who face no obstacle in the absence of internal struggle or awareness.
In the account of St. Andrew the Fool-for-Christ, an example is given that illustrates this idea. It narrates that in homes where people are driven by spiritual ideals, "demons no longer find space for themselves"—they remain waiting for the slightest weakness to pounce once more (source: link txt). This underscores that a positive spiritual mindset and continual internal battle against negative influences create conditions in which evil spirits cannot establish themselves.
Thus, the interpretation of the statement is linked to the immaterial nature of demons, their ability to infiltrate human hearts and minds stealthily, as well as to the subjective features of a person's inner state, where the absence of spiritual awareness or the rejection of spiritual experience creates room for their quiet and unobtrusive presence.
Supporting citation(s):
"Maybe, maybe, because demons are not material, these bodiless spirits do not occupy space; maybe an unlimited number of them can fit in one place—in the human heart." (source: link txt)
"Demons inhabit the human heart..." (source: link txt)
"In these houses demons no longer find a place for themselves and wait in the corners, hoping to pounce should someone show even the slightest weakness..." (source: link txt)