How does sanctification work in the life of a believer?

Sanctification is the process by which believers are made holy, and it fundamentally stems from our union with Christ. Hebrews 2:11 highlights that both the One who sanctifies and those who are sanctified are one. This means that the holiness of Christ transfers to us; we are holy because we are in Him. The role of the Holy Spirit is crucial, as He enables us to live according to our new nature. Thus, holiness is not just a gradual improvement but a reality established through Christ's finished work, making every part of us in Him equally holy.