This study aims to make a contribution to the foundations of theological apologetics. In this, it seeks to determine the boundaries and possibilities of the apologetical process by orienting it to the quadruplicity of divine working (God's creation, divine legislation, redemption, God's hidden working). The study examines this quadruplicity within influencing theological concepts of the last two hundred years (F. Schleiermacher, K. Barth, E. Hirsch, P. Tillich, W. Elert, P. Althaus and E. Brunner).