There is a paradox hidden in Abraham sacrificing his son, it is that the ethical expression of sacrificing son is killing son. Kierkegaard tries to override this paradox by "the leap of faith" and "teleological suspension of the ethical", The effort reflects his emphasis on passion of faith and his critique on rational supremacy. Kafka responds and questions what Kierkegaard said about Abraham, he points out that the paradox and limitation of person himself determines the impossibility of "the leap of faith" and either/or option, the test of sacrificing son is overwhelming transcendent pressure which human cannot sustain. Through a smile-stimulating and indecisive Abraham, Kafka shifts from interpreting faith to reflecting on the limitation of person himself.