So-called "reformed" get it wrong again. As usual. You speak of "justification" as though it is interchangeable with sanctification. They aren't even the same thing, so how can they be interchangeable?
Paul stated what justification is
exactly and no man's opinion is going to change the God-inspired definition the apostle put in black and white.
Romans 3, (NASB)
21 But now apart from the Law the righteousness of God has been manifested, being witnessed by the Law and the Prophets,
22 even the righteousness of God through faith in Jesus Christ for all those who believe; for there is no distinction;
23 for all have sinned and fall short of the glory of God,
24 being justified as a gift by His grace through the redemption which is in Christ Jesus;
25 whom God displayed publicly as a propitiation in His blood through faith. This was to demonstrate His righteousness, because in the forbearance of God He passed over the sins previously committed;
26 for the demonstration, I say, of His righteousness at the present time, so that He would be just and the justifier of the one who has faith in Jesus.
There you have it. Unequivocal, straight from God Himself. Justification -- translated from the Greek
dikaios meaning "declare righteous" -- occurs at the instant of faith, and like salvation is one time given but lifetime and beyond experienced. Justification is not sanctification, however.
1 Corinthians 1
30 But by His doing you are in Christ Jesus, who became to us wisdom from God, and righteousness and sanctification, and redemption,
31 so that, just as it is written, "LET HIM WHO BOASTS, BOAST IN THE LORD."
Sanctification is the Greek
hagios meaning "set apart" for God, made holy. It, too, is instantaneous at the moment of faith, but Jesus Himself, Paul, and the writer of Hebrews all make it clear sanctification is also progressive in nature.
John 17
18 "As You sent Me into the world, I also have sent them into the world.
19 "For their sakes I sanctify Myself, that they themselves also may be sanctified in truth."
1 Peter 1
14 As obedient children, do not be conformed to the former lusts which were yours in your ignorance,
15 but like the Holy One who called you, be holy yourselves also in all your behavior;
16 because it is written, "YOU SHALL BE HOLY, FOR I AM HOLY."
Hebrews 12
14 Pursue peace with all men, and the sanctification without which no one will see the Lord.
And finally, Paul states unequivocally that the ultimate sanctification takes place at the coming of our Lord Christ.
1 Thessalonians 5
23 Now may the God of peace Himself sanctify you entirely; and may your spirit and soul and body be preserved complete, without blame at the coming of our Lord Jesus Christ.
They aren't the same thing. Stop trying to make the same thing. Pick up a Bible and learn. By the way, Reformed theology does not embrace this confusion of justification and sanctification. That's a mistake made by modern so-called "reformed."