{Did I shew fickleness?} (m(8874)i ara t(8869) elaphri(8369)?). An
indignant negative answer is called for by m(8874)i. The
instrumental case of elaphri(8369) is regular after echr(8873)am(886e)
from chraomai, to use. Elaphria is a late word for levity
from the old adjective, elaphros, light, agile ( 2Co 10:17  Mt
11:30 ). Here only in N.T. {Purpose} (ouleuomai). Paul raises
the question of fickleness about any of his plans. {Yea yea}
(Nai nai) {--nay nay} (ou ou). See a similar repetition in
 Mt 5:37 . It is plain in  Jas 5:12  where "the yea" is "yea" and
"the nay" is "nay." That seems to be Paul's meaning here, "that
the Yea may be yea and the Nay may be nay."