Why is being sanctified through Christ's offering important for Christians?

Sanctification through Christ's offering is critical for Christians because it means being made holy and completely set apart by God. According to Hebrews 10:10, we are sanctified through the one-time offering of Jesus, which establishes our standing before God as eternally justified. This foundational truth not only reassures believers of their identity in Christ but also underscores the grace of God, as this sanctification is not an act of our own doing but entirely by Christ's sacrifice. It assures believers that they are perfectly accepted in Him, providing immense comfort in their faith and daily walk with Christ.