Sanctification is positional in Christ, not a matter of progression. “And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and SANCTIFICATION and redemption, so that, as it is written, “Let the one who boasts, boast in the Lord.””1 Corinthians 1:30-31 ESV
Christ IS our sanctification. That term refers to being set aside by God, not some sort process by which God slowly but surely cleans us up. In Christ, the regenerated elect believer is totally clean, totally holy, not deficient in any manner.
One of my favorite passages-“Now to him who is able to keep you from stumbling and TO PRESENT YOU BLAMELESS before the presence of his glory with great joy, to the only God, our Savior, through Jesus Christ our Lord, be glory, majesty, dominion, and authority, before all time and now and forever. Amen.”Jude 1:24-25 ESV
It is Christ who is ABLE to keep us from stumbling and present us as blamesless before the throne of His Father-that blamelessness is a result of having been imputed with the righteousness of Christ. It is NO WAY added to by our so called “good works.”
“And by that will we have been sanctified through the offering of the body of Jesus Christ once for all. And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering he has perfected for all time those who are being sanctified.”Hebrews 10:10-14 ESV
The last verse is our focus here-“For by a SINGLE OFFERING (the cross) He (Christ) HAS PERFECTED (past tense-that cross actually perfected) for all time (forever perfected by the single offering) those who are being SANCTIFIED (set aside).
It was the sacrifice of Christ that forever made perfect those who are being sanctified-His work made the elect perfect-acceptable before God. That statement of “those who are being sanctified” refers to the individual elect sinners who come to believe the gospel. “Being sanctified” refers to being set aside by God in time-they are saved DURING their lifetimes.
This verse is often used to support progressive sanctification because of that phrase “being sanctified.” It could sound like a present, on-going process, but it’s not, and the verse itself tells you that-it is the single offering of Christ that perfected the elect. That death on the cross was the sole condition to bring the elect of God to glory. Man has no part to play in salvation. Upon hearing that good news of the death of Christ, the elect sinner now enters the rest being referred to Hebrews. That is the rest-that you cease from working, and rest fully in the confidence (Latin “con fide for “with faith”) that the death of Christ fully and finally satisfied God.
Christ’s work is both our justification and sanctification. He did it all through His work on the cross.
Now, the question then becomes about Paul’s instructions on how to live. Is living how Paul commands in the second part of most of his epistles a sign of “progressive sanctification?” If you’re doing that stuff, are you progressively being sanctified? NO! Those lifestyle things are results of knowing that Christ has satisfied God-there are no further conditions to meet! Therefore, live in this manner.
Christ is all. Just rest in that. Fight to rest in that. Fight anything that tells you there is something for you to do now. Stand firmly on the testimony of God-“And you, who were dead in your trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses, by canceling the record of debt that stood against us with its legal demands. This he set aside, nailing it to the cross. He disarmed the rulers and authorities and put them to open shame, by triumphing over them in him.”Colossians 2:13-15 ESV
The work of Christ is complete. There is nothing for the elect sinner to do or improve.