2 Cor 3:18
We all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory, even as by the Spirit of the Lord.
KJV
Scripture is a revelation of God. Theologians speak of it as a special revelation. We are given a general revelation of God in nature. Even within ourselves the knowledge of the existence and power of God are inherent (Rom 1:18-21). This revelation is not enough to save us, however. Neither is it enough to sanctify us. We need a special revelation of God that will show us more of His character and His ways. This is provided in His Word.
God has revealed Himself to us in His Word. We are told that God appeared to Samuel by the Word of the LORD (1Sam 3:21), and revealed Himself to Samuel by His Word. By coming to the Scriptures, studying, and meditating on them, we can be changed to be like Jesus. Not only so, but it is the only pathway of true happiness. We are told that by abiding in the Scriptures we shall be blessed (made happy) thereby (Jas 1:21-25).
Let us seek to come to the Scriptures more and more that we might learn more of the Lord and be changed into His glorious likeness.