 Following themes addressed in Non <unk> <unk> ( 1931 ) ; Mit brennender Sorge ( 1937 ) and Divini redemptoris ( 1937 ) , Pius wrote against " anti @-@ Christian movements " and needing to bring back to the Church those who were following " a false standard ... misled by error , passion , temptation and prejudice , [ who ] have strayed away from faith in the true God " . Pius wrote of " Christians unfortunately more in name than in fact " having shown " cowardice " in the face of persecution by these creeds , and endorsed resistance : 
