It is arrogant to claim Christianity is the only true religion.

Pluralism is itself an exclusive truth claim, and a particularly bold one. (1) When Hick says "no religion has the whole truth" he is claiming a higher truth - the view from above - that Christianity, Islam, and orthodox Judaism all deny. He is not avoiding the claim to uniqueness; he is just relocating it to his own position. This is sometimes called "the arrogance of pluralism." The parable of the blind men and the elephant assumes the narrator can see the elephant - a point G.K. Chesterton, Lesslie Newbigin, and Stephen Prothero (God Is Not One) have made. (2) Religions make contradictory claims about the nature of ultimate reality (personal vs. impersonal, one vs. many, creator vs. illusion), the human problem (sin, ignorance, desire, disharmony), and the solution (grace, enlightenment, works, liberation). The law of non-contradiction says they cannot all be fully true. Respecting persons does not require pretending their claims agree. (3) Christianity has a distinctive answer: God has entered history in Jesus and made himself reachable. That is either true or false. If true, it is good news to share, not secret knowledge to hoard. Missionary zeal to tell people good news is not arrogance; arrogance is claiming to know better than the billion Christians, billion Muslims, billion Hindus that they are all equally mistaken. (4) Christian exclusivism is also inclusivist at a second level: the New Testament speaks of God making himself knowable to those who never heard the name of Jesus (Rom 2, Acts 17), judging people according to what they had access to. Exclusivism about Jesus-as-savior does not require exclusivism about who is finally saved.