read sharing-by beholding, we are to become changed...

2 Corinthians 3:18 But we all, with unveiled face, beholding as in a mirror the glory of the Lord, are being transformed into the same image from glory to glory, just as by the Spirit of the Lord.

  

"By beholding we are to become changed; and as we meditate upon the perfections of the divine Model, we shall desire to become wholly transformed, and renewed in the image of His purity. It is by faith in the Son of God that transformation takes place in the character, and the child of wrath becomes the child of God." God's Amazing Grace- Page 301

2 Timothy 15-16 

15-and that from childhood you have known the Holy Scriptures, which are able to make you wise for salvation through faith which is in Christ Jesus. 

16-All Scripture is given by inspiration of God, and is profitable for doctrine, for proof, for correction, for instruction in righteousness.

"God has been pleased to communicate His truth to the world by human agencies, and He Himself, by His Holy Spirit, qualified men and enabled them to do this work. He guided the mind in the selection of what to speak and what to write. The treasure was entrusted to earthen vessels, yet it is, nonetheless, from Heaven. The testimony is conveyed through the imperfect expression of human language, yet it is the testimony of God; and the obedient, believing child of God beholds in it the glory of a divine power, full of grace and truth."

 "In His Word, God has committed to men the knowledge necessary for salvation. The Holy Scriptures are to be accepted as an authoritative, infallible revelation of His will. They are the standard of character, the revealer of doctrines, and the test of experience."
The Great Controversy Introduction vi-vii.