An opponent of Marxism in the 1930s, persecuted by the Nazis during the occupation of France, declared 'righteous among the nations' for having saved Jewish families from Nazi deportation, a sharp critic of technical progress and one of the inspirers of ecological concern, Jacques Ellul – jurist, historian, theologian – was always distinguished by his radical non-conformism. The texts collected in this volume – 'which should be read as a testament', as Alain Besançon specifies in his prologue – are another example of Ellul's ability to construct a thought against the current of the commonplace. In them, Jacques Ellul makes an analysis that is as rich as it is polemical on the relations that, on the religious level, Islamism and Judeo-Christianity maintain. Starting from three principles that are supposed to certify the kinship between the two, he shows that this relationship is theologically erroneous, since these 'three pillars of conformism' – children of Abraham, monotheism, religions of the Book – constitute, in reality, abusive approaches that hide a fundamental difference: 'The similarity of words completely hides the oppositions, both of meaning and of being'.