…it is clear…that among the members of the Bahá’í community
the celebrations of former religious dispensations should be abandoned.
However, Bahá’ís are encouraged to "consort with the followers of all
religions in a spirit of friendliness and fellowship," and there is no
harm in Bahá’ís sharing Christmas with Christian relatives or friends. Indeed, families may contain both Bahá’ís and non-Bahá’ís, and the
participation by Bahá’ís at celebrations of Christmas or of other religious
observances, should not be made into a source of conflict but rather be used as
an opportunity for demonstrating the honor due to other religions and also as
an incentive for developing the celebration of Bahá’í Holy Days and
anniversaries.
- The Universal House of Justice (From a letter dated 6 November
1986 to an individual believer; ‘Messages from the Universal House of Justice
1986-2001’)