We must leave truth to make its own witness when we have humbly and positively presented it as we understand it. Any study of history and society shows that people move under leadership. Ideas move down through leaders to the people and so movements are generated. This is the process for good or ill. It is naturally so.
Specialisation results from a combination of aptitude, interest and training.
So specialisation and leadership develop and in one field or another we all subject ourselves to those who are leaders through aptitude, interest and training. It follows from this that a potent way through to masses of people is through leaders. While we may touch some through direct approach a far greater effect will be wrought if only we can gain the ear of leaders. As we are ready receive, our gift will be more readily received. Having a mission to other Christians it is surely obvious that our witness can be made only in relationship with others not out of relationship.