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Sanctification is the ongoing process of becoming more like Christ after salvation. While justification is instant (declared righteous), sanctification is gradual (being made holy). The Holy Spirit transforms us as we cooperate through spiritual disciplines. We're already 'saints' (set apart) but still growing in holiness.
Why this answer? It starts with 1 Thessalonians 4:3, then cross-checks Romans 6:22 and Philippians 1:6 so the summary stays anchored in Scripture.
“For this is the will of God, your sanctification.”
- 1 Thessalonians 4:3
Justification is God's act of declaring sinners righteous based on Christ's work, not our own merit. When we trust in Jesus, His righteousness is credited to us and our sins to Him. We're declared 'not guilty' before God—a legal standing, not gradual transformation. It's by faith alone in Christ alone.
Spiritual growth requires intentional practices: daily Bible reading, consistent prayer, fellowship with believers, serving others, and obeying what you learn. Growth also comes through trials (James 1:2-4). Stay connected to Christ like a branch to a vine (John 15). The Holy Spirit produces fruit over time.
The Holy Spirit is the third person of the Trinity—fully God, distinct from the Father and Son. He convicts of sin, regenerates believers, indwells Christians, and empowers them for service. The Spirit guides into truth, produces spiritual fruit, and distributes spiritual gifts.
Ask any question about the Bible, Christianity, or theology and get answers grounded in Scripture.
Answers are informed by Scripture and trusted theologians including Matthew Henry, John Calvin, and John Wesley. Always verify with Scripture and consult your local church for pastoral guidance.