King James Version
And some of them of understanding shall fall, to try them, and to purge, and to make them white, even to the time of the end: because it is yet for a time appointed.English Standard Version
and some of the wise shall stumble, so that they may be refined, purified, and made white, until the time of the end, for it still awaits the appointed time.Catholic Public Domain Version
And some of the learned will be ruined, that they may be kindled and chosen and purified, up to the predetermined time, because there will be still another time