Prior to his salvation?
Scripture, please.
Our salvation began long before any of us ever drew out first breath.
Ephesians 1:3-6
Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, just as He chose us in Him before the foundation of the world, that we would be holy and blameless before Him. In love He predestined us to adoption as sons and daughters through Jesus Christ to Himself, according to the good pleasure of His will, to the praise of the glory of His grace, with which He favored us in the Beloved.
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Scripture teaches Christ is our sanctification, so it does not start for us until we are in Christ.
Nice move of the goalposts. I did not say our sanctification began prior to our being in Christ. I said is Irresistible Grace - grace accomplishing what God purposes it to accomplish - at work in sanctification prior to our salvation.
2 Thessalonians 2:13
But we should always give thanks to God for you, brethren beloved by the Lord, because God has chosen you from the beginning for salvation through sanctification by the Spirit and faith in the truth.
All of it happens by God's grace, and God's grace accomplishes what God purposed from eternity for it to accomplish. "
Irresistible Grace" is sometimes called "
Effectual Grace" because it is grace God effectually applies to those he has chosen, or determined, to save.
That is, by definition, an example of IG prior to salvation. He applies his grace effectively to those He has chosen
to save, not just those He has already saved. The two are not mutually exclusive conditions.
"God from all eternity did by the most wise and holy counsel of His own will, freely and unchangeably ordain whatsoever comes to pass; yet so as thereby neither is God the author of sin; nor is violence offered to the will of the creatures, nor is the liberty or contingency of second causes taken away, but rather established."
But, apparently, that did not include the sanctification of those He has chosen to save.
"By the decree of God, for the manifestation of His glory, some men and angels are predestinated unto everlasting life, and others foreordained to everlasting death."
And that, apparently, did not include the sanctification of those He chose to save.
"As God hath appointed the elect unto glory, so hath He, by the eternal and most free purpose of His will, foreordained all the means thereunto. Wherefore they who are elected being fallen in Adam are redeemed by Christ, are effectually called unto faith in Christ by His Spirit working in due season; are justified, adopted, sanctified, and kept by His power through faith unto salvation. Neither are any other redeemed by Christ, effectually called, justified, adopted, sanctified, and saved, but the elect only."
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Foreordained all the means thereunto"? and among those means is the elect being sanctified?
"It pleased God, in His eternal purpose, to choose and ordain the Lord Jesus, His only-begotten Son, to be the mediator between God and men, the prophet, priest, and king; the head and Savior of the church, the heir of all things, and judge of the world; unto whom He did, from all eternity, give a people to be His seed, and to be by Him in time redeemed, called, justified, sanctified, and glorified."
God gave a people to His chosen mediator to be sanctified..... but God's grace was not accomplishing that task between eternity and the day of one's salvation?
Chapter 14 of the WCF explains how sanctification is accomplished at the time of salvation "
- They who are effectually called and regenerated, having a new heart and a new spirit created in them, are further sanctified, really and personally, through the virtue of Christ’s death and resurrection, by His Word and Spirit dwelling in them; the dominion of the whole body of sin is destroyed, and the several lusts thereof are more and more weakened and mortified, and they more and more quickened and strengthened, in all saving graces, to the practice of true holiness, without which no man shall see the Lord.
That does not conflict in any way with the earlier WCF statements asserting God's eternal ordaining.