How does sanctification occur according to the Bible?

Sanctification is a vital aspect of the Christian life that signifies a believer's separation and setting apart for God's service. The process is the work of the Holy Spirit, who imparts a new nature, as indicated in 2 Corinthians 5:17. Furthermore, Romans 15:16 illustrates that this change is ultimately for service to God. Contrary to progressive improvement, sanctification is seen as rooted in God's grace, emphasizing that it is a work dependent on the Spirit's influence in the believer’s life, enabling them to live in accordance with God's will.