God never designed that, as a rule, His servants should go out singly to labor. To illustrate: Here are two brothers. They are not of the same temperament; their minds do not run in the same channel. One is in danger of doing too much; the other fails to carry the burdens that he should. If associated together, these might have a molding influence upon each other, so that the extremes in their characters would not stand out so prominently in their labors. It might not be necessary for them to be together in every meeting; but they could labor in places ten, fifteen or even thirty miles apart,—near enough together, however, so that if one came to a crisis in his labors, he could call on the other for assistance. They should also come together as often as possible for prayer and consultation.... (Ev 73.1) MC VC

When one labors alone continually, he is apt to think that his way is above criticism, and he feels no particular desire to have anyone labor with him. But it is Christ’s plan that someone should stand right by his side, so that the work shall not be molded entirely by one man’s mind, and so that his defects of character shall not be regarded as virtues by himself or by those who hear him. (Ev 73.2) MC VC

Unless a speaker has one by his side with whom he can share the labor, he will many times be placed in circumstances where he will be obliged to do violence to the laws of life and health. Then, again, important things sometimes transpire to call him away right in the crisis of an interest. If two are connected in labor, the work at such times need not be left alone.—Historical Sketches, pp. 126, 127. (1886). (Ev 73.3) MC VC