The article examines the foundations that constitute the formulation of the metaphysical question in Martin Heidegger’s philosophy. The article focuses in detail on the period of 1929-1930, which includes the report “Was ist Metaphysik?” and the lecture course “Die Grundbegriffe der Metaphysik. Welt–Endlichkeit–Einsamkeit”. The introduction to the article and the main problem are three prejudices from Being and Time that make it impossible to ask a clear question about being. The main material is presented on the basis of primary sources: (...) “Being and Time”, “Basic Concepts of Metaphysics”. The peculiarity of Heidegger’s work of the 1929s and 1930s is the approximation of the research methodology in the 1927 treatise to the present. Phenomenological hermeneutics and fundamental ontology were used in relation to the ancient Greeks to develop a metaphysics of ciphers or special words in which Heidegger concentrated the Greek experience of being. During the 1930s, Heidegger would make an effort to realize this experience by looking for points of intersection between Greeks and Germans in German idealism and poetry. Since the Greeks are ruled by aeon (temporal time) and agon (the spirit of competition), modern metaphysics needs to develop a special concept of being that would distinguish who Germans are, where they came from, and where they are going. The article proposes a distinction between higher being - divine, human life-world – social, human essence – cultural, working, shepherd. Being, being and man are subject to metaphysical questioning as the most general concepts. That is, those that immediately or a priori express a certain clarity. Nihilism, as the spirit of the time, demands that metanarratives be questioned and self-evidence be reassessed. An outstanding achievement of Heidegger’s metaphysical question is the distinction being as Seyn. The nationalist or folk Old German definition of being both frees it from academic requirements and accurately captures the open horizon in which the existence of the first half of the 20th century was frozen. Since this essence of man is presented after the linguistic turn, it lacks the main feature of the turn-a specific linguistic ability or words that clarify being. The article aims to study Martin Heidegger’s metaphysical teaching in the 1929-1930s. The article concludes that the metaphysics of the above-mentioned years of Heidegger’s philosophy reveals itself in parallel with the spirit of the time of the then German conservative revolution. As we know, Martin Heidegger did not remove the question of being and selected names for it, because he was looking for an appropriated lawn and a boundary, beyond which the exit to the lawn opens. This article offers a look at this problematic in the contextual name of metaphysic – Seyn. (shrink)