A missionary is a member of a religious group sent into an area to proselytize and/or perform ministries of service, such as education, literacy, social justice, health care and economic development. The word "mission" originates from 1598 when the Jesuits sent members abroad, derived from the Latin missionem (nom. missio), meaning "act of sending" or mittere, meaning "to send". The word was used in light of its biblical usage; in the Latin translation of the Bible, Christ uses the word when sending the disciples to preach in his name. The term is most commonly used for Christian missions, but can be used for any creed or ideology.

Missionaries by religion

Christian missions

A Christian missionary can be defined as "one who is to witness across cultures". The Lausanne Congress of 1974, defined the term, related to Christian mission as, "to form a viable indigenous church-planting movement". Missionaries can be found in many countries around the world.

Jesus instructed the apostles to make disciples of all nations (Matthew 28:19–20, Mark 16:15–18). This verse is referred to by Christian missionaries as the Great Commission and inspires missionary work.