The article is devoted to conceptualization of ideological sources that inspired the founder of Slavophilism A. S. Khomyakov on thinking up the concept of sobornost as “unity in variety”, which the thinker defined as an objective factor of the proper functioning of Church, state and society, and, moreover, as the principle of self-preservation and interaction of the latter ones. The article deals with idealistic views of representatives of German classical philosophy – Schelling and Hegel – as one of the factors that ideologically influenced the formation of the concepts of the founder of Slavophilism about “unity in variety”. The author comes to the conclusion that, having adopted some Schelling’ and Hegel’ idealistic views, A. S. Khomyakov states that it is important to note the original concept of sobornost as “unity in variety” with the possibility of its practical application.