The A. presents the main ways in which the Heideggerian thought has been accepted in Catholic theology from mainly German (Rahner, Balthasar, Siewerth, Welte, etc.) and French expression (Marion, Virgoulay, Lafont, Guibal, Birault, Greisch). He examines the theological reaction of a score of known writers from 1928 to 1995. He shows how those theologians view their concept of God in the light of the Heideggerian question of Being.