It is our own character and experience that determine our influence upon others. In order to convince others of the power of Christ's grace, we must know its power in our own hearts and lives. The gospel we present for the saving of souls must be the gospel by which our own souls are saved. Only through a living faith in Christ as a personal Saviour is it possible to make our influence felt in a skeptical world. If we would draw sinners out of the swift-running current, our own feet must be firmly set upon the Rock, Christ Jesus. CSW 99.2
The badge of Christianity is not an outward sign, not the wearing of a cross or a crown, but it is that which reveals the union of man with God. By the power of His grace manifested in the transformation of character the world is to be convinced that God has sent His Son as its Redeemer. No other influence that can surround the human soul has such power as the influence of an unselfish life. The strongest argument in favor of the gospel is a loving and lovable Christian.—Testimonies on Sabbath-School Work, 115, 116. CSW 100.1