A sending forth to preach the Gospel, as when our Lord sent forth His Apostles. The word involves also the idea of power and authority and also a definite sphere of operations. Thus when a Bishop is consecrated, it is for some particular Diocese where he has, by reason of his consecration, "the power of Mission." So also, a Priest who is Rector of a Parish has the "power of Mission" in that Parish. And the Bishop has no authority to minister in any other Diocese, nor the Priest in any other Parish, save only as they may be invited to do so by the ecclesiastical authority thereof. Such "power of Mission" is bestowed by the Church through her Bishops and it is thus that she maintains order and prevents confusion in her work.