EN
The article presents the historical context of the formation of the dogmatic constitution of the First Vatican Council Dei Filius. It systematically describes its content, taking into account its hermeneutical significance in the area of God‘s Revelation, God‘s existence, and the relationship of reason and faith. It critically evaluates the ways of grasping the theological questions and problems of that time, presented in Dei Filius, as a response to the political and church changes of the then-society. At the same time, it points to the consequences of the dogmatization of radical changes in the Church. Finally, it outlines the perspectives of their further development.