ὥσπερ ἐκ αἰνίγματι.  cf. 1 Cor. xiii. 12.  ἐν αἰνίγματι or ἐξ αἰνιγμάτων, as in Æsch., Ag. 1113=by dark hints.  The bold oxymoron concluding this sentence is illustrated by Ovid’s “impietate pia” (Met. viii. 477), Lucan’s “concordia discors” (Phars. i. 98), or Tennyson’s “faith unfaithful.”