I highly recommend Tim Keller’s sermon on “exclusivity.” Here is a summary from the web link page:
Religion poses a danger of creating division or intolerance between groups of people. However, the gospel leads us to three things: humble service, reconciling behavior that is neither patronizing nor self-righteous, and a love toward people who hold different beliefs than we do.
He discusses two alternatives to the gospel, and shows why they are inadequate.
Here is a quote from Lesslie Newbigin to which Keller refers in his sermon:
In the famous story of the blind men and the elephant, so often quoted in the in the interests of religious agnosticism, the real point of the story is constantly overlooked. The story is told from the point of views of the king and his courtiers, who are not blind but can see that the blind men are unable to grasp the full reality of the elephant and are only able to get hold of part of it. The story is constantly told in order to neutralize the affirmations of the great religions, to suggest that they learn humility and recognize that none of them can have more than one aspect of the truth. But, of course, the real point of the story is exactly the opposite. If the king were also blind, there would be no story. The story is told by the king, and it is the immensely arrogant claim of one who sees the full truth, which all the world’s religions are only groping after. It embodies the claim to know the full reality which relativizes all the claims of the religions.