Mission - Literally 'sent out'; the duty of Christians to spread the gospel (the good news about Jesus).
Evangelism - Preaching the gospel (the good news about God) to convert people to the Christian faith.
Ecumenism - Promoting unity among the World's Christian Churches (e.g.
World Council of Churches, 1948)
Parable of sheep and goats
As the Father has sent me, lam sending you