A missionary is a member of a religious group which is sent into an area in order to promote its faith or provide services to people, such as education, literacy, social justice, health care, and economic development.In the Latin translation of the Bible, Jesus Christ says the word when he sends the disciples into areas and commands them to preach the gospel in his name. The term is most commonly used in reference to Christian missions, but it can also be used in reference to any creed or ideology.The word mission originated in 1598 when Jesuits, the members of the Society of Jesus sent members abroad, derived from the Latin missionem (nom. missio), meaning 'act of sending' or mittere, meaning 'to send'. Source: Wikipedia (en)