What does the Bible say about being sanctified in truth?

In John 17:17, Jesus prays to the Father, asking Him to sanctify His followers in truth, declaring that His Word is truth. This indicates that sanctification is not merely about moral improvement or maturity, but rather about being set apart by God for His purposes through the truth of the Gospel. The sanctification process signifies being transformed and made holy through the redemptive work of Christ, who is the embodiment of truth. As believers, understanding our identity in Christ and the nature of God's truth is essential for our spiritual growth and unity with one another.