Nearly all Millerites speak of "present truth" and "new light", by which the faithful are called out from the less enlightened or apostate traditions of Christianity.The largest Millerite group at the present time is the Seventh Day Adventist General Conference (the Seventh-day Adventist Church , with approximately 11 million members, world-wide. The Jehovah's Witnesses are another large group with descendent lineage from the Millerite movement.
You can see where Russell's enlightenment came from after reading the article.
Ken P.