The Christian understanding of the primacy of God (thoecentricism) is of christolo-gical character i.e. its absolutism and universality define the quality of all human matters (humanism). J. Ratzinger/ Benedict XVI points to the wide consequences of radical af-firmation or rejection, or yet adopting a relative approach to the truth about the primacy of God. These concern the individual and communal (the Church) experiencing of faith and the morality that derives from it, the way and the direction of practising theology (especially the ecclesiology) but they also concern all forms of social life: accepting or negating God, inevitably affects the mental, ethical or even economic condition of the world. The utter acceptance of the primacy of God in all fields of the human existence and activity allows for a realistic perception of the situation and is the proper criterion for making decisions, a stable foundation of life, a source of real hope and the only ultimate answer to all the questions that humans may ask.