October 16

He [Baha’u’llah] urges the peoples of the world to “consort with the followers of all religions in a spirit of friendliness and fellowship.” And He further states: “That the divers communions of the earth, and the manifold systems of religious belief, should never be allowed to foster the feelings of animosity among men, is, in this Day, of the essence of the Faith of God and His Religion. These principles and laws, these firmly established and mighty systems, have proceeded from one Source, and are the rays of one Light. That they differ one from another is to be attributed to the varying requirements of the ages in which they were promulgated.” 
- The Universal House of Justice  (From a letter dated 27 December 2017 written on behalf of the Universal House of Justice to an individual believer)