Colossians 3:8-11: But now you must put them all away: anger, wrath, malice, slander, and obscene talk from your mouth. Do not lie to one another, seeing that you have put off the old self with its practices and have put on the new self, which is being renewed in knowledge after the image of its creator. Here there is not Greek and Jew, circumcised and uncircumcised, barbarian, Scythian, slave, free; but Christ is all, and in all.
Paul speaks in these verses of the old self and the new self. Some contemporary spiritual writers use the terms false self and true self to address this issue—which makes a good point. Ephesians 4:22 speaks of the old self having deceitful desires, so, yes, it is false, it is deceiving, it is misleading. But to the degree that we abide in Christ we are free of this old self, this false self, with its misleading desires and all the confusion and pain it brings. Achieving this freedom to be our new self, our true self, is not a quick or easy process; it takes time and much spiritual experience to learn to live in communion with the Spirit, to be able to abide in Christ. But it is our calling—our promise—and as we persevere, we together experience more and more the reality that truly, as Paul declares, “Christ is all, and is in all.”