How do we know the sufficiency of scripture is true?

The sufficiency of scripture is evident in its ability to provide guidance, conviction, and illumination to believers. As David expresses in Psalm 119, God's Word imparts understanding and clarity, crucial for spiritual growth. The psalmist's longing for God's commandments reflects a deep reliance on scripture as the ultimate source of truth and direction. This is not dependent on human wisdom or understanding but rather demonstrates a reliance on the divine wisdom and insight provided through God's Word. The consistent testimony throughout the scriptures affirms that it equips believers for every good work, thereby establishing the truth of its sufficiency.