How do we know the authority of God's Word?

The authority of Scripture is rooted in its divine origin; it is God's Word, breathed out for humanity. Paul’s instruction to Timothy reinforces that it is not man's opinions or clever sayings that hold weight, but God's timeless truth found in His Word. The Scriptures themselves testify to their own power, stating that they are alive and sharper than any two-edged sword, able to penetrate and judge the thoughts and intentions of the heart. This authority is validated by the impact of the Word as it brings regeneration and spiritual growth in believers.