A murderer (ανθρωποκτονος). Old compound (Euripides) from ανθρωπος (man) and κτεινω (to kill), a man-killer, in N.T. only here and John 8:44 (of Satan).

No (πασ--ου). According to current Hebraistic idiom= ουδεις as in 1. John 2:19; 1. John 2:21.

Abiding (μενουσαν). Present active feminine accusative predicate participle of μενω, "a continuous power and a communicated gift" (Westcott).