The Great Announcement proclaimeth: O people of Persia! In former times ye have been the symbols of mercy and the embodiments of affection and kindliness. The regions of the world were illumined and embellished by the brightness of the light of your knowledge and by the blaze of your erudition. How is it that you have arisen to destroy yourselves and your friends with your own hands? Bahá’u’lláh, Tablets of Bahá’u’lláh Revealed After the Kitáb-i-Aqdas. Available from https://reference.bahai.org/en/t/b/TB/tb-8.html#pg84