He is also a Jew for Jesus.
I dont know if he is an official member of Jews fro Jesus or not, but as a well known Jewish believer in Jesus he is a crucially important person. Jay, and growing numbers of like minded people are creating a protective shield around the Jewish people and the State of Israel. They recognize that the foundation of Western Civilization is the Torah of Israel. They are also building bridges of rapprochement between Christians and Jews via two parallel paths: a reassessment of the actual life and teachings of the rabbi from Nazareth, and a new realization of the centrality and eternity of the Torah. Every ounce of brotherly appreciation between the between these two historically belligerent groups (historical suspicions notwithstanding) will release a power over the world which has not been seen for two thousand years. It has within itself the power to redeem the Biblical Narrative and save the world.