Why this word is great
EMPYREAN — [Adjective] Of or relating to the highest celestial sphere in premodern cosmology, often associated with pure light or fire. From Latin empȳreus, from Ancient Greek ἐμπύριος (empúrios, "in fire"), from ἐν (en, "in") + πῦρ (pûr, "fire"). Unlike "celestial" (which broadly evokes the sky or heavens) or "ethereal" (which conjures wispy, insubstantial delicacy), "empyrean" is the realm of divine conflagration—the apex where matter dissolves into radiance. It is the blinding corona of a midday sun, the molten gold of a medieval altarpiece, or the searing white of a star glimpsed through a telescope—not just light, but light distilled to its most absolute and annihilating form. To speak of the empyrean is to acknowledge that even heaven has its furnace.