And angels (aggelous de). The second example in Jude, the fallen angels, accusative case after tetērēken (perfect active indicative of tēreō, for which verb see 2Pe 2:4, 2Pe 2:7) at the end of the verse (two emphatic positions, beginning and end of the clause).
Kept not (mē tērēsantas). First aorist active participle with negative mē, with play on “kept not” and “he hath kept.”
Principality (archēn). Literally, “beginning,” “rule,” (first place of power as in 1Co 15:24; Rom 8:38). In Act 10:11 it is used for “corners” (beginnings) of the sheet. In Eph 6:12 the word is used for evil angels. See Deu 32:8. Both Enoch and Philo (and Milton) discuss the fallen angels.
But left (alla apolipontas). Second aorist active participle of apoleipō, old verb, to leave behind (2Ti 4:13, 2Ti 4:20).
Their own proper habitation (to idion oikētērion). Old word for dwelling-place (from oikētēr, dweller at home, from oikos), in N.T. only here and 2Co 5:2 (the body as the abode of the spirit).
In everlasting bonds (desmois aidiois). Either locative (in) or instrumental (by, with). Aidios (from aei, always), old adjective, in N.T. only here and Rom 1:20 (of God’s power and deity). It is synonymous with aiōnios (Mat 25:46). Mayor terms aidios an Aristotelian word, while aiōnios is Platonic.
Under darkness (hupo zophon). See 2Pe 2:4 for zophos. In Wisdom 17:2 we find desmioi skotous (prisoners of darkness).
Great (megalēs). Not in 2Pe 2:9, which see note for discussion.