During the
February Revolution, he became a member of the
Provisional Committee of the State Duma. He served as the chief procurator of the Holy Synod in the first and the second (first coalition) composition of the Provisional Government. Removed from the Synod of his former members: metropolitans of Petrograd Pitirim (Oknova) and Moscow
Macarius (Nevsky), whom the press accused of having links with Rasputin. 14 (27) April 1917 initiated the publication of a decree of the Provisional Government on changing the composition of the Holy Synod, who left from his former members only the
Archbishop Sergius (Stragorodsky). Actively supported the activities democratically and reformist clergy (in particular, on his initiative by the editor "All-Russian Church Public Herald" liberal professor Boris Titlinov was appointed) with his support, the All-Russian Diocesan Congress of representatives of the clergy and laity was held. Was a supporter of the convocation of the Local Council, considering that the
majority of its participants will be supporters of
reforms (this assumption was not justified). His emotional nature, peculiar authoritarian management style displeased the majority of the representatives of the episcopate. According to Metropolitan
Eulogius (Georgievsky), part of the Pre-Council Council, Lvov during his time as ober-prosecutor "He was a dictator and he overtook a lot of bishops", "made the business atmosphere of our meetings annoyed, hysterical tone, prejudiced ill will towards the bishops – he did not help the work, but interfered". On July 8 (21), 1917, Lvov resigned, supporting the creation of a new government led by
Alexander Kerensky, who, however, did not include him in his cabinet, preferring to appoint the chief prosecutor of a much more tactful and who knew how to find a common language with the hierarchy of professor
Anton Kartashev. According to historian Nikita Sokolov,{{Quote He was a member of the
All-Russian Local Council (opened on August 15, 1917); but did not attend cathedral meetings. == Lvov and the speech of General Kornilov ==