Just a quick thought: Don’t confuse the doctrine of Justification and Sanctification. They are distinct. What do we mean?
Sanctification describes the process of the believer being separated from sin and separated unto God by the work of the Holy Spirit. 1 Peter 1:16 states “You shall be holy, for I am holy” (NASB). It is important to make a distinction between sanctification and justification and not to confuse the two. Justification is the act of God declaring a sinner innocent of his sins; it heavily borrows from the legal realm the idea of legal righteousness. Romans 3:28 teaches us that one is not justified by the works of the law but by faith. Romans 1:17 affirms that this righteousness is by faith and the source is from God. Yet at the same time 1 Thessalonians 4:3 presupposes sanctification involving the believers’ effort and personal responsibility since it commands believers to abstain from sexual immorality. While justification describes a believer’s outward relationship with God in terms of their legal standing of being no longer guilty and righteous, sanctification focuses more on a believer’s inner transformation.