{Shall confirm} (ebai(9373)ei). Direct reference to the same
word in verse  6 . The relative hos (who) points to Christ.
{Unto the end} (he(9373) telous). End of the age till Jesus comes,
final preservation of the saints. {That ye be unreproveable}
(anegkl(8874)ous). Alpha privative and egkale(935c), to accuse, old
verbal, only in Paul in N.T. Proleptic adjective in the predicate
accusative agreeing with humas (you) without h(9373)te and the
infinitive as in  1Th 3:13  5:23  Php 3:21 . "Unimpeachable, for
none will have the right to impeach" (Robertson and Plummer) as
Paul shows in  Ro 8:33  Col 1:22,28 .