Hebrews 2:10-11 For it was fitting that he, for whom and by whom all things exist, in bringing many sons to glory, should make the founder of their salvation perfect through suffering. For he who sanctifies and those who are sanctified all have one source. That is why he is not ashamed to call them brothers
He who calls you and causes you to be born again, who justifies you and forgives you, who adopts you as His own, will not stop at merely getting you. He’ll keep working in you to make you more like Christ until the day of glory. The process of spiritual maturing is sanctification, becoming holy.
To sanctify really means “to set apart”, so when you consider what God does for you in His act of salvation you can see that He sets you apart for something. Justification, the declaration of the sinner as righteous, is not done as an end unto itself. This verdict of “not guilty” is for the purpose of empowering us to do God’s work. We are saved for His purposes, for His own good pleasure.
While were were still sinners, He made us alive in Christ to do good works (Ephesians 2:5) and He will continue working in us to bring us into maturity. This means we grow in character, in faith, in works, and in love. God does this in us both by the work of the Holy Spirit within and by our own actions and choices that lead us to holiness. It’s only through Christ’s shed blood that we are capable of this growth, however. None of this is ours to claim credit.