Fedorovism is the driving philosophy of the Sobornost. It is derived from the ideas of Nikolai Fyodorovich Fyodorov, a 19th-century Russian Orthodox Christian Philosopher.
"Nikolai Fyodorovich Fyodorov (Russian: Никола́й Фёдорович Фёдоров; surname also Anglicized as "Fedorov") (June 9, 1829 – December 28, 1903) was a Russian Orthodox Christian philosopher, who was part of theRussian cosmism movement and a precursor of transhumanism. Fyodorov advocated radical life extension, physical immortality and even resurrection of the dead, using scientific methods."
https://en.wikipedia.org/wiki/Nikolai_Fyodorovich_Fyodorov
"Federov believed in a teleological explanation for evolution, that mankind was on the path to perfectibility: and that human mortality was the biggest sign of our imperfection. He argued that the struggle against death would give all humanity a common enemy — and a victory condition that could be established, in the shape of (a) achieving immortality for all, and (b) resurrecting the dead to share in that immortality. Quite obviously immortality and resurrection for all would lead to an overcrowded world, so Federov also advocated colonisation of the oceans and space: indeed, part of the holy mission would inevitably be to bring life (and immortal human life at that) to the entire cosmos."
http://www.antipope.org/charlie/blog-static/2011/07/federovs-rapture.html