Wyschogrod's best known book,
The Body of Faith, deals with God’s preferential love for the Jewish people and asserts that the election of Israel is corporeal in nature. The biblical notion of God’s indwelling in the Jewish people, he says, indicates that God is physically present among them. His book ''Abraham's Promise: Judaism and Jewish-Christian Relations'' makes an appeal for a new non-
supersessionist Christian view of Judaism. If Judaism and Christianity are to have a stable and harmonious co-existence in the future, then Christianity must dispense with or, at the very least, not openly insist on a status for Judaism in which Judaism is considered an incomplete or antiquated religion. At the same time, Wyschogrod urges Jews not to pursue a fallacious dismissal of the divinity of Christ that operates on
a priori grounds. In other words, while Jews should reject the divinity of Christ, they should not do so by attempting to argue that God's
Incarnation in man is somehow inconsistent with the teaching of the
Hebrew Bible. On the contrary, there is much merit to the Christological position that posits "the indwelling of God in Israel by concentrating that indwelling in one Jew rather than leaving it diffused in the people of Jesus as a whole." Even Wyschogrod's writing that focuses solely on Jewish theology could be said to show evidence of the importance in his thought of dialogue between Jewish and Christian theology. His emphasis on the radical and sublime shock and force of God's choice to enter human history in and through the people of Israel, a unilateral and non-abrogable event, shows an affinity with the thought of the
neo-orthodox Protestant theologian
Karl Barth, whose work Wyschogrod considered relevant to Jewish theologians. ==Writings==