The ethical decision, however, is not the last word. It leads necessarily to a crisis in which man will either despair again or turn to God. Up to this point God has been considered too exclusively as a complement of man’s ethical life; he ordinarily recalls Him only in examination of conscience. By admitting his faults the ethical man expresses his essential limitation before God’s transcendency and avoids falling into despair. Religious contrition thus belongs to the essence of ethical life, since it indicates that although evil is a part of one’s self, one detaches himself from it in his ultimate choice, and asserts his fundamental ability to observe the ethical law.
At a certain point, however, my conscience will conclude that it is impossible to observe faithfully the claims of ethics, and I will be forced to abandon belief in my own basic righteousness. My conscience accuses me of being guilty before God not only in certain respect, but in every respect. A new decision becomes necessary, in which I will either abandon myself to despair, or throw myself entirely on God’s mercy. Only in this moment can my commitment be called absolute, because only here do I choose my self completely, including the true relation to its Origin, guilt…This means that the choice of myself, by which I escaped from the aesthetic stage, is only fully accomplished on the religious level, where I cast myself as totally guilty before God. The ethical stage was a transition. My decision becomes absolute only when it is completed in absolute despair or in absolute faith.
If the essence of spirit is subjectivity, it follows that man becomes fully spirit only in the religious stage. For in the ethical stage the subjective choice was still aimed at an objective realization of ethical values, whereas in the religious choice subjectivity abandons every hope of realizing itself objectively. Man accepts himself as nonobjective, as an individual, completely isolated from the universal. He is alone with his guilt before God, and finds no place in an objective universe. But in choosing himself as guilty before God he finally chooses himself and his relation to the Origin of his self.
Louis Dupré, Kierkegaard as Theologian, 47-48.