{Is able} (dunatei). Late verb, not found except here;
 13:3  Ro 14:4 . So far a Pauline word made from dunatos, able.
{All sufficiency} (p(8373)an autarkeian). Old word from autark(8873)
( Php 4:11 ), common word, in N.T. only here and  1Ti 6:6 ). The
use of this word shows Paul's acquaintance with Stoicism. Paul
takes this word of Greek philosophy and applies it to the
Christian view of life as independent of circumstances. But he
does not accept the view of the Cynics in the avoidance of
society. Note threefold use of "all" here (en panti, pantote,
p(8373)an, in everything, always, all sufficiency).