{A murderer} (anthr(9370)oktonos). Old compound (Euripides)
from anthr(9370)os (man) and ktein(935c) (to kill), a man-killer, in
N.T. only here and  Joh 8:44  (of Satan). {No} (p(8373)--ou).
According to current Hebraistic idiom= oudeis as in  2:19,21 .
{Abiding} (menousan). Present active feminine accusative
predicate participle of men(935c), "a continuous power and a
communicated gift" (Westcott).