A pioneer is a volunteer Bahá'í who leaves his or her home to journey to another place (often another country) for the purpose of teaching the Bahá'í Faith. The act of so moving is termed pioneering. Bahá'ís refrain from using the term "missionary". The first pioneer to enter a country or region mentioned in `Abdu'l-Bahá's Tablets of the Divine Plan is given the title of Knight of Bahá'u'lláh.