This theologian studied at the Theology Faculty of Charles University in Prague, where he graduated as a Doctor of Theology in 1916. After the First World War, he joined the clergy's reformist movement in the Roman Catholic Church, and was involved in the foundation of the Czechoslovak Hussite Church (CHC).
Many years of religious and New Testament study gave Kovář a broad perspective and prepared him for his theological work in the CHC. From 1926, Kovář dedicated himself to teaching its theologians and to CHC's publishing ministry.
In 1931-1935 during the patriarchy of G A Procházka, Kovář operated outside the church for the Ministry of Education and National Enlightenment. His friends in the Dr.
Karel Farský Society helped him return to his research in the CHC, in particular PhDr Antonín Hartl. Kovář was named Extraordinary Professor of New Testament Research for the CHC at the Hus Faculty on 19 October 1935.