The article is devoted to one of the most important problems of legal theory, i.e. the problem of "just law." All great revolutions were aimed at achieving social justice that was primarily associated with the equality of all before the law. To a large extent, that explains amazing coincidences of those algorithms according to which those revolutions were going through the same stages of formation. In the process of revolution, the idea of equality often substituted the idea of freedom. The clash of the old departing legal order with the new revolutionary norms of legislation created a specific situation, a state of emergency or anomie where the action of any law suspended. However, the statehood, despite the change in its form, continued to exist. The necessity of creating a new law required the formation of a new legal order; thus, adoption of constitutive, normative acts that enshrined the established order was the outcome of development of new law. The author draws attention to the historical experience of the English and French Revolutions correlating it with the experience of other revolutions.