"To those holding fast to the most-insane renovationist heresy of the sergianists: to those who
teach that the earthly establishment of the Church of God is maintained by rejecting the truths of
Christ; and to those who declare that the Church of Christ is saved by serving the theomachic authorities and carrying out their godless commands, even unto the trampling down of the sacred canons, the traditions of the Holy Fathers and the divine dogmas, and to the destruction of all Christianity; and to those who revere the antichrist and his servants, and his forerunners, and all his minions, as a legitimate authority and one established by God; and to all the leaders of that anti-christian heresy, those who revile the Confessors and New Martyrs (to Sergei of Nizhegorod, to Nikolai of Kiev and to Aleksy of Khutyn), and to those who would repeat their doctrines, and to the renovationists, and to other heretics, — anathema”.
[This anathema was issued by the Josephite* branch of the Russian Orthodox Catacomb Church in the late 1920's. Similarly, St. Maxim of Serpukhov revealed that: "The Soviet and Catacomb Churches are incompatible. The secret Catacomb Church of the wilderness has anathematized the 'Sergianists' and those with them."
*The Josephites were followers of St. Joseph the Metropolitan of Petrograd.]