As a devout Orthodox Christian , he did not accept the Bolshevik Revolution but remained in Russia until his death , painting the portraits of Ivan Ilyin , Ivan Pavlov , Ksenia Derzhinskaya , Otto Schmidt , and Vera Mukhina , among others .
As a devout Orthodox Christian , he did not accept the Bolshevik Revolution but remained in Russia until his death , painting the portraits of Ivan Ilyin , Ivan Pavlov , Otto Schmidt , and Vera Mukhina , among others .