(The London, England LDS Temple)
The attitude that one ought to look down upon or reject those who are not of their faith is an abhorrent one. Members of the Church, of course, do not always live up to these high standards. But, there can be no doubt as to what the standards are:
What does the Lord expect of us as Latter-day Saints? What does He expect of me as a member of this Church…There is no room in the heart of a Latter-day Saint for bitterness, for unkindness, for animosity to any other of the sons and daughters of God. They may not be of our faith, but we owe them an obligation to treat them as sons and daughters of our Father in Heaven.
Latter-day Saints have always been taught that a dismissive attitude toward the beliefs or faith of others is sinful. (Indeed, the Book of Mormon condemns in the strongest terms those who adopt such an attitude: Alma 31:16-19, Alma 31:27-35).