The article presents an unknown episode from the biography of the Russian writer, collector and performer of folk pieces, B. V. Shergin. Here is shown a variant of a spiritual poem The Dream of the Mother of God recorded by Shergin in his native Arkhangelsk province in 1917 and published in 1919 in the newspaper Vozrozhdeniye Severa (Revival of the North). The characteristic features of the poem’s composition and stylistic structure and its role in the writer’s establishment are considered.