 The movement's beliefs largely reflect its distinctive Seventh-day Adventist Church heritage, with some small divergences.Leaders of the TFSDA movement were vigorously hunted by the KGB (national security agency) and almost without exception, pastors and leaders of this church spent many years in prison, their children were taken from them and forced into exile.Three prominent leaders of the TFSDA were V. A. Shelkov, and two brothers named Murkin.