τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
[Seite 779] hervorglänzen, Sp.
resplandecer, Phys.B 323.17.
ἐκστίλβω (AM)
είμαι στιλπνός, λάμπω, γυαλίζω.