How do we know sanctification is true in a believer's life?

The process of sanctification in a believer's life is affirmatively supported by scripture and personal experience as sanctification involves the Holy Spirit working through the crucifying views of Christ's cross. As believers acknowledge their union with Christ, they are empowered to weaken the indwelling power of sin and correspond their lives more closely to Jesus’ example. This transformation is marked by a growing commitment to holiness and an increase in joy that flows from being in fellowship with God, despite the trials that may come.