Put to death that which is earthly.
Intro
Christ is all.
Put to death what is earthly in you. V.5-6
Union with Christ, because it puts us in a new relationship to sin and brings us into the sphere of the Spirit’s power, will impact the way we live. Ultimately, then, the imperative “put to death” in this verse must be viewed as a call to respond to, and cooperate with, the transformative power that is already operative within us.
sins arise because people have an uncontrolled desire for more and more “experiences” and “pleasures”; and such a desire is nothing less than a form of idolatry. It is not necessary, then, to suppose that the Colossian Christians were particularly guilty of such sins. Rather, the list reflects the kinds of sins to which Gentiles who came to Christ were generally prone.
The commitment to get rid of sin, Paul implies, cannot be accomplished by gradual degrees and with minor repairs. The whole foundation must be replaced, and the sooner we allow God to tear it down and start the rebuilding process, the sooner we avert the catastrophe of having the whole house come crashing down around our heads when the weight of sin becomes too much.
If we felt the same way about the sin in our lives as we do about the water we drink, we probably would not comfort ourselves that the pollution level is only a fraction over the acceptable level. We would ignore the assurances from our culture that a little sin does not do that much harm. In Christ there is zero tolerance for any pollution, and radical measures need to be taken to eliminate the problem.
Conclusion
The process as described is not a matter of gradually changing the old into something better, but of progressively actualizing the already-existing new creation
Even when it seems that we have gotten away with our sin, it gestates within us. Consequently, Paul insists, our unethical behavior, which belongs to our old life, must be discarded like old rags or cut out like a cancerous tumor before it destroys us.