Why is understanding sanctification important for Christians?

Sanctification is the process by which believers are set apart for God's purposes and means becoming more aligned with His character over time. The New Testament emphasizes that this is both a definitive act and an ongoing process. Hebrews 10:10 states that we have been sanctified through the offering of Jesus Christ once for all, affirming our positional holiness. However, believers are also called to live out this identity by setting apart our attitudes and actions in daily life, fostering a lifestyle of love and holiness that reflects God's character. This understanding encourages humility and dependence on God's power for true transformation.