No human invention can find a remedy for the sinning soul.... The fountain of the heart must be purified before the streams can become pure. He who is trying to reach heaven by his own works in keeping the law, is attempting an impossibility. There is no safety for one who has merely a legal religion, a form of godliness. The Christian’s life is not a modification or improvement of the old, but a transformation of nature. There is a death to self and sin, and a new life altogether. This change can be brought about only by the effectual working of the Holy Spirit....
The wind is heard among the branches of the trees, rustling the leaves and flowers; yet it is invisible, and no man knows whence it comes, or whither it goes. So with the work of the Holy Spirit upon the heart. It can no more be explained than can the movements of the wind. A person may not be able to tell the exact time or place, or to trace all the circumstances in the process of conversion; but this does not prove him to be unconverted. By an agency as unseen as the wind, Christ is constantly working upon the heart. Little by little, perhaps unconsciously to the receiver, impressions are made that tend to draw the soul to Christ. These may be received through meditating upon Him, through reading the Scriptures, or through hearing the Word from the living preacher. Suddenly, as the Spirit comes with more direct appeal, the soul gladly surrenders itself to Jesus.... The beginning of redemption we may know here through a personal experience.—The Desire of Ages, 172-173. WGD 156
In the full light of day, and in hearing of the music of other voices, the caged bird will not sing the song that his master seeks to teach him. He learns a snatch of this, a trill of that, but never a separate and entire melody. But the master covers the cage, and places it where the bird will listen to the one song he is to sing. In the dark, he tries and tries again to sing that song until it is learned, and he breaks forth in perfect melody. Then the bird is brought forth, and ever after he can sing that song in the light. Thus God deals with His children. He has a song to teach us, and when we have learned it amid the shadows of affliction we can sing it ever afterward. MH 472
Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. John 3:5-6, KJV