But many are attracted into the canvassing field to sell books and pictures that do not express our faith and do not give light to the purchaser. They are induced to do this because the financial prospects are more flattering than can be offered them as licentiates. These persons are obtaining no special fitness for the gospel ministry. They are not gaining that experience which would fit them for the work. They are losing time and opportunities by this kind of labor. They are not learning to bear the burden of souls and daily obtaining a knowledge of the most successful way of winning people to the truth. These men are frequently turned aside from the convictions of the Spirit of God and receive a worldly stamp of character, forgetting how much they owe to the Lord, who gave His life for them. They use their powers for their own selfish interests and refuse to labor in the vineyard of the Lord. (4T 604.1) MC VC

I was alarmed as I saw the various nets of Satan woven about men whom God would use, diverting them from the work of the ministry. There will surely be a dearth of laborers unless there is more encouragement given men to improve their ability with the purpose of becoming ministers of Christ. Satan is constantly and perseveringly presenting financial gain and worldly advantages to engage the minds and powers of men, and keep them from doing the duties essential to give them an experience in the things of God. And when he sees that men will move forward, giving themselves to the work of teaching the truth to those who are in darkness, he will do his utmost to push them to extremes in something that will weaken their influence and cause them to lose the advantage they would gain were they balanced by the Spirit of God. (4T 604.2) MC VC

I was shown that our ministers were doing themselves great injury by carelessness in the use of their vocal organs. Their attention was called to this important matter, and cautions and instructions were given them by the Spirit of God. It was their duty to learn the wisest manner of using these organs. The voice, this gift of heaven, is a powerful faculty for good, and if not perverted, would glorify God. All that was essential was to study and conscientiously follow a few simple rules. But instead of educating themselves, as they might have done by the exercise of a little common sense, they employed a professor of elocution. (4T 604.3) MC VC