In certain respects this places me with those who use the model of a cultural-linguistic system to understand the Christian faith. Christianity is truly different from every other religious community. It is not one among a number of ways to achieve a goal that is common to all human beings or all great religious traditions. Like other traditions, it is sui generis. But these deep differences do not prevent communication between traditions.
Interreligious dialogue occurs and is often successful.
Furthermore, our heritage is constituted by learning from others. Ancient Judasim appropriated much from Egyptians, Canaanites, Babylonians, Persians and Greeks. Although the Judaism of Jesus' day was in full continuity with that of Saul, it had been profoundly transformed not only through internal developments but through its interactions with other communities. Much that Christianity took over from Judaism entered it only because of appropriations from other traditions. The history of Christianity is a similar history of appropriation.