{Must not strive} (ou dei machesthai). Rather, "it is not
necessary for him to fight" (in such verbal quibbles). The
negative ou goes with dei, not with the infinitive
machesthai. {Gentle} ((8870)ion). Old word (from epos, speech),
affable, mild, in N.T. only here (and  1Th 2:7  in some MSS.; W.
H. have 
(8870)ios). {Teachable} (didaktikon). See  1Ti 3:2 .
{Forbearing} (anexikakon). Late compound (from future of
anech(935c), anex(935c), and kakon, putting up with evil). Here only
in N.T.