"For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast. For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them." Ephesians 2:8-10
We are His workmanship from start to finish.
Whether it's our sanctification from sin or our being led into social good works - neither is of our doing. It is all His doing.
If one tries to teach that either kind of "works" saves one or keeps one saved - he is preaching another gospel and not the gospel of grace.
Agree on this and it doesn't matter how you define things.
Add anything to grace for salvation and you'll part company very quickly with me and with God.
Indeed, we are renewed creations in Messiah for the purpose of doing good works. The Bible speaks of salvation in the past, present, and future tense:
Ephesians 2:5 even when we were dead in our trespasses, made us alive together with Christ—by grace you have been saved—
1 Peter 1:8-9 Though you have not seen him, you love him. Though you do not now see him, you believe in him and rejoice with joy that is inexpressible and filled with glory, 9 obtaining the outcome of your faith, the salvation of your souls.
Philippians 2:12 Therefore, my beloved, as you have always obeyed, so now, not only as in my presence but much more in my absence, work out your own salvation with fear and trembling,
Romans 5:9-10 Since, therefore, we have now been justified by his blood, much more shall we be saved by him from the wrath of God. 10 For if while we were enemies we were reconciled to God by the death of his Son, much more, now that we are reconciled, shall we be saved by his life.
Romans 13:11 Besides this you know the time, that the hour has come for you to wake from sleep. For salvation is nearer to us now than when we first believed.
1 Corinthians 3:15 If anyone's work is burned up, he will suffer loss, though he himself will be saved, but only as through fire.
1 Corinthians 5:5 you are to deliver this man to Satan for the destruction of the flesh, so that his spirit may be saved in the day of the Lord.
So there is a past salvation from the penalty of our sins in regard to our justification and right standing before God, there is a present salvation from sinning in regard to our sanctification, and a future salvation from the wrath of God on the day of the Lord.
1 John 3:4-10 Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. 5 You know that he appeared in order to take away sins, and in him there is no sin. 6 No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him. 7 Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous. 8 Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil. 9 No one born of God makes a practice of sinning, for God's seed abides in him, and he cannot keep on sinning because he has been born of God. 10 By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.
When we are declared righteous by grace through faith that means that we are being declared to be someone who practices righteousness in accordance with God's law and refrains from practicing sin in transgression of God's law. We are to be bondservants of obedience, leading to righteousness, and bondservants of righteousness, leading to sanctification:
Romans 6:15-19 What then? Are we to sin because we are not under law but under grace? By no means! 16 Do you not know that if you present yourselves to anyone as obedient slaves,[c] you are slaves of the one whom you obey, either of sin, which leads to death, or of obedience, which leads to righteousness? 17 But thanks be to God, that you who were once slaves of sin have become obedient from the heart to the standard of teaching to which you were committed, 18 and, having been set free from sin, have become slaves of righteousness. 19 I am speaking in human terms, because of your natural limitations. For just as you once presented your members as slaves to impurity and to lawlessness leading to more lawlessness, so now present your members as slaves to righteousness leading to sanctification.
Salvation from sin or sanctification involves being made more like Christ in his perfect obedience to the law, so there is no sanctification without repentance from sin and obedience. If we do refrain from practicing righteousness and make a practice of sinning or lawlessness, then we are not abiding in him, and we are not trusting God for our sanctification or to lead us into doing what is right. So it is not that we obey God in order to become justified or in order to keep our justification, but rather because we trust God. If we don't trust God, then we won't make a practice of obeying Him or of doing His will, we are not His children, and we won't be saved.
Matthew 7:21 “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but
the one who does the will of my Father who is in heaven. 22 On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ 23 And then will I declare to them, ‘I never knew you;
depart from me, you workers of lawlessness.’