The Holy Spirit, as the representative of the ascended Lord, is supreme in the Church. It is His sovereign voice that summons His chosen workers to undertake missionary or home enterprise. Dr. Ryland, who at first opposed Carey's idea of going to India, said afterward, "I believe God Himself infused into the mind of Carey that solicitude for the salvation of the heathen which cannot be fairly traced to any other source." And the same is true of all missionaries. The true call is always of the Divine Spirit. Whom He wills to call, He calls. Whom He calls, He separates. Whom He separates, He endows and sends forth.
But, Divine and absolute though the selection is, the Spirit seeks the concurrence of the Church. It was in answer to the Church's prayer for direction that the Spirit designated Barnabas and Saul for the great work of world-evangelization; and it was when the Church had fasted and prayed, and had offered these two to God as their wave offering, that they were sent forth by the Holy Ghost. Thus the Spirit and the Bride cooperate.
In determining whether you have been called by the Holy Spirit to be a missionary, you must certainly call in the advice of Christian friends, and specially of the church with which you worship. If the Spirit of God is in you and them, they will ratify the movements of your heart. It is right, too, to consider whether you have been specially gifted and qualified for the work. In this also, the advice of the Church is most valuable. Of course, the Church herself must fast, i.e., be separate from known evil and indulgence, that she may hear God's voice, and be able to advise her children.