The God of the Old Testament is a missionary God, calling one family in order to bless all the families of the earth.
The Christ of the Gospels is a missionary Christ; he sent the church out to witness.
The Spirit of the Acts is a missionary Spirit; he drove the church out from Jerusalem to Rome.
The church of the epistles is a missionary church, a worldwide community with a worldwide vocation.
The end of the Revelation is a missionary End, a countless throng from every nation.
So I think we have to say the religion of the Bible is a missionary religion. The evidence is overwhelming and irrefutable. Mission cannot be regarded as a regrettable lapse from tolerance or decency. Mission cannot be regarded as the hobby of a few fanatical eccentrics in the church. Mission lies at the heart of God and therefore at the very heart of the church.
A church without mission is no longer a church. It is contradicting an essential part of its identity. The church is mission.
--From 'The Whole Christian', "Proceedings of the International Conference of Christian Medical Students", ed. Lee Moy Ng (London: ICCMS and Christian Medical Fellowship, 1980), p. 46.