When he, the Spirit of truth is come, he will guide you into all truth. John 16:13.
The Comforter is called “the Spirit of truth.” His work is to define and maintain the truth. He first dwells in the heart as the Spirit of truth, and thus He becomes the Comforter. There is comfort and peace in the truth, but no real peace or comfort can be found in falsehood. It is through false theories and traditions that Satan gains his power over the mind. By directing men to false standards, he misshapes the character. Through the Scriptures the Holy Spirit speaks to the mind, and impresses truth upon the heart. Thus He exposes error, and expels it from the soul. It is by the Spirit of truth, working through the Word of God, that Christ subdues His chosen people to Himself.24The Desire of Ages, 671.
God intends that even in this life the truths of His Word shall be ever unfolding to His people. There is only one way in which this knowledge can be obtained. We can attain to an understanding of God's Word only through the illumination of that Spirit by which the Word was given. “The things of God knoweth no man, but the Spirit of God;” “for the Spirit searcheth all things, yea, the deep things of God” (1 Corinthians 2:11, 10).25Steps to Christ, 109.
From God, the fountain of wisdom, proceeds all the knowledge that is of value to man, all that the intellect can grasp or retain. The fruit of the tree representing good and evil is not to be eagerly plucked because it is recommended by one who was once a bright angel in glory. He has said that if men eat thereof, they shall know good and evil; but let it alone. The true knowledge comes not from infidels or wicked men. The word of God is light and truth. The true light shines from Jesus Christ, who “lighteth every man that cometh into the world” (John 1:9). From the Holy Spirit proceeds divine knowledge. He knows what humanity needs to promote peace, happiness, and restfulness here in this world, and to secure eternal rest in the kingdom of God.26Counsels to Parents, Teachers, and Students, 360, 361.
Never should the Bible be studied without prayer. Before opening its pages we should ask for the enlightenment of the Holy Spirit, and it will be given.... The Spirit of truth is the only effectual teacher of divine truth.27Steps to Christ, 91.
From God's Amazing Grace - Page 199
God's Amazing Grace