The gospel ministry is needed to give permanence and stability to the medical missionary work; and the ministry needs the medical missionary work to demonstrate the practical working of the gospel. Neither part of the work is complete without the other. CH 514.2
The message of the soon coming of the Saviour must be given in all parts of the world, and a solemn dignity should characterize it in every branch. A large vineyard is to be worked, and the wise husbandman will work it so that every part will produce fruit. If in the medical missionary work the living principles of truth are kept pure, uncontaminated by anything that would dim their luster, the Lord will preside over the work. If those who bear the heavy burdens will stand true and steadfast to the principles of truth, the Lord will uphold and sustain them. CH 514.3
The union that should exist between the medical missionary work and the ministry is clearly set forth in the fifty-eighth chapter of Isaiah. There is wisdom and blessing for those who will engage in the work as here presented. This chapter is explicit, and there is in it enough to enlighten anyone who wishes to do the will of God. It presents abundant opportunity to minister to suffering humanity, and at the same time to be an instrument in God's hands of bringing the light of truth before a perishing world. If the work of the third angel's message is carried on in right lines, the ministry will not be given an inferior place, nor will the poor and sick be neglected. In His word God has united these two lines of work, and no man should divorce them. CH 514.4