The spirit of Christ is a missionary spirit. The very first impulse of the renewed heart is to bring others also to the Saviour. Such was the spirit of the Vaudois Christians. They felt that God required more of them than merely to preserve the truth in its purity in their own churches; that a solemn responsibility rested upon them to let their light shine forth to those who were in darkness; by the mighty power of God's word they sought to break the bondage which Rome had imposed.
The Vaudois ministers were trained as missionaries, everyone who expected to enter the ministry being required first to gain an experience as an evangelist. Each was to serve three years in some mission field before taking charge of a church at home.
This service, requiring at the outset self-denial and sacrifice, was a fitting introduction to the pastor's life in those times that tried men's souls. The youth who received ordination to the sacred office saw before them, not the prospect of earthly wealth and glory, but a life of toil and danger, and possibly a martyr's fate.
The missionaries went out two and two, as Jesus sent forth His disciples. With each young man was usually associated a man of age and experience, the youth being under the guidance of his companion, who was held responsible for his training, and whose instruction he was required to heed. These colaborers were not always together, but often met for prayer and counsel, thus strengthening each other in the faith.
To have made known the object of their mission would have ensured its defeat; therefore they carefully concealed their real character. Every minister possessed a knowledge of some trade or profession, and the missionaries prosecuted their work under cover of a secular calling.
Usually they chose that of merchant or peddler. "They carried silks, jewelry, and other articles, at that time not easily purchasable save at distant marts; and they were welcomed as merchants where they would have been spurned as missionaries." - Wylie, book 1, chapter 7.
All the while their hearts were uplifted to God for wisdom to present a treasure more precious than gold or gems. They secretly carried about with them copies of the Bible, in whole or in part; and whenever an opportunity was presented, they called the attention of their customers to these manuscripts. Often an interest to read God's word was thus awakened, and some portion was gladly left with those who desired to receive it.