9 Do not lie to one another, seeing that you have put off the old self with its practices 10 and have put on the new self, which is being renewed in the knowledge after the image of its creator. 11 Here there is not Greek and Jew, circumcised and uncircumcised, barbarian, Scythian, slave, free; but Christ is all, and in all.
The most damaging subterfuge a Christian can suffer is that of self-deception. When a true follower of Christ agrees with a lie, that believer denies the power of their own identity as granted by Christ. In that denial, Christians fail to exercise their God-given strength and power to overcome sins. The acceptance of falsehood brings further damage when the Christian begins to believe deceptions that are about their identity. One of the greatest attacks of the adversary is the attack on the Christian’s victorious nature.
For many Christians, the identity that has been established for them through the work and efforts of Christ has been masked and held captive by an erroneous belief that their “old self” or “sin nature” or “flesh” has some authority or ability to conquer them. However, when confronted with these verses in Colossians, Christians are empowered to trust in the power of Christ within them!
In order for truth to reign as truth in the life of a Christian community, it must be ever present on the lips and in the hearts of believers. This is why Paul admonishes us not to lie. The one who has trusted Christ has removed the garment of the old self. The word for put off indicates a removal as if stripping off clothing. So here, one who has believed in Christ Jesus has taken off the old and has dressed in the new. It is important to recognize the tenses used in this passage. The putting off of the old is a past tense verb that focuses on a single time action. So the Christian has “put off” the old self and has dressed in the new nature that has been given to them in Christ Jesus. This changing of one’s spiritual clothing occurs when Christ has redeemed the Christian. Indeed, it is part of the justification of a believer. (Ongoing sanctification is present at the end of verse 10, we will address that below.)
Someone will object at this point, “But if I have been given a new nature, why do I still struggle with sin?!” This question presupposes that one requires an “old self” in order for sin to be present. Consider for a moment the state of our first patriarch, Adam. Adam need not have a sinful disposition to rebel against God’s command. He had no need for original sin to derive sins origination in himself. He simply volitionally chose to sin. So it is with one who has been given a new nature. We sin because we choose to do so. If it were not so, then why would Paul assert that this new nature is “being renewed?” Being renewed is a present tense passive verb, indicating a continuous action being done from an external source. If a sinful nature were required for sin to exist, then the new nature would not need continuous renewing. Yet, Paul’s reminder is that sin is still present in this world and therefore still effects a redeemed Christian but, not in the same manner with which it used to rule over that Christian. Rather, now the Christian is capable of overcoming sin! Praise the Lord!
Christians are given a new nature that they must now learn to live in. Much like the fairy tails in which a prince or princess is plucked from the position of a pauper and thrust into a royal court, a Christian must learn to live in the royal court of God’s majesty. The one who was once a slave must now learn to live as one who has been made free. The adjustment to freedom from sin takes time. This is called sanctification and it provides the evidence of salvation. Once one has been justified in Christ and the old clothes have been cast off, now the believer must learn to live in their freedom, pursuing the fulfillment of God’s image on this earth!
What a joy to be free from sin and to know that we have been set free! We have been set free! Because of the atoning work of Jesus on the cross and His resurrection, we have been set free from sin and are made new! Do not believe the lie that you are still bound! You are free.
In this freedom, all worldly definitions of your identity fall by the side. All definitions that would confine you to this life are removed. Indeed, your nature is no longer bound to cultural identities or monikers of society. Your identity is found in Christ and in Christ alone. So, Christians regard each other as family, no matter the background or history. Christians are united in the restoration of the image of God within their souls! What a freeing delight to ponder. No matter what your background or difficulty may be, you’ve been granted freedom in Christ Jesus to live as the image of God on this earth, unhindered by any nature, history, cultural baggage, or generational sin. You have been set free in Christ Jesus, live like it!
 This is called an aorist tense in Greek. The aorist tense can be used rather loosely in translation, however, it typically indicates a past tense action that happened once. The emphasis of an aorist verb is most often on a single time action.