What does it mean that believers are sanctified through truth?

In John 17:17, Jesus prays, 'Sanctify them through thy truth: thy word is truth.' This emphasizes that sanctification—a process of being made holy or set apart for God's purposes—occurs through the truth found in Scripture. Theologically, this reflects the belief that the Word of God is not merely informational but transformational, shaping the hearts and lives of believers. By engaging with Scripture, Christians are spiritually nourished, guided, and equipped to live in accordance with God’s will. This process of sanctification is essential for growth in faith and deepening one's relationship with God, marking the continual work of the Holy Spirit in the believer's life.