Sanctifying grace begins simultaneous with justification and regeneration which also may have a growth process
Both justification and regeneration are spoken of as completed actions. Paul uses the perfect and Aorist tenses in reference to justification (Rom. 5:1-2). The new birth is described as an act of creation (Eph. 2:10a; 2 Cor. 5:17; Col. 3:10; Eph. 4:24; 2 Cor. 4:6) which is instanteous and completed.
However, the progressive work of sanctification has its source of power in the indwelling Spirit and its source of righteousness in the new inward man which is created in true holiness and righteousness (Eph. 4:24; Col. 3:10) there is
evidential progressive justification and quickening. From this inward man originates the intent and desire to do good while from the indwelling Spirit originates the power to perform that intent and desire in the manifest life of the Christian. It is the holy Spirit that empowers the "will" for good so that the Christian is enabled to "do" good - or as Paul puts it, "For it God that worketh in you both to WILL and to DO of His good pleasure" - Philip. 2:13.
For example, David in various Psalms speaks about being "quickened" so that he can bring to fruition the performance of the Word of God in his life. This repetitive quickening is the same as being "filled" with the Spirit in the New Testament and results in the ability to "WALK in the Spirit" for those who "LIVE in the Spirit."
James refers to evidential justification in connection with true spiritual life. Paul deals with this in Romans 6 where he denies that justification occurs without regenerative/resurrective life. He says we have been made "free" from sin judicially as the Greek term translated "free" is the very exact term previously used in Romans 3:24-5:2 translated "justified" by the death of Christ.
However, in the act of water baptism the believer identifies not only with the death of Christ to sin but with the resurrected life of Christ equally (Rom. 6:4-5). Hence, there is no such thing as a justified but unregenerated child of God. That does not mean they are one and the same but they are inseparable. We are justified WITHOUT WORKS but regeneration is NOT WITHOUT WORKS (Eph. 2:10). Evidential justification is justification manifested in the life of the believer through regenerative life. Therefore, James can challenge those who say they have been justified to "SHOW ME" justification without works but he will SHOW YOU justification through his works. Where there is true justification by faith without works there is regenerative life manifested by works.
However, that evidential justification manifested through regenerative life of works is only made manifest as we are progressively quickened by the Spirit = filled by the Spirit = "walking in the Spirit" or else what is manifested is the works of the flesh or what James goes on in James 3 to describe as the wisdom from beneath that produces a manifest life of "aduterers and adultresses" in James 4.
The "adultresses" and "aduterers" is by context a metaphorical description of the fruits of the flesh being manifested in the life of a believer. Hence, it is an unholy union of the believer with the works of the flesh.
4 Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.
5 Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?
James 4:5 says the same thing as Galatians 5:16 and Romans 7:14-25. We have an inward warefare between two antagonistic natures that requires mortifying the deeds of the flesh through yeilding to the power of the Holy Spirit to quicken us, make us alive to God's Word in the performance of our lives - our daily walk.