This I say, therefore, and testify in the Lord, that you should no longer walk as the rest of the Gentiles walk, in the futility of their mind, having their understanding darkened, being alienated from the life of God, because of the ignorance that is in them, because of the blindness of their heart; who, being past feeling, have given themselves over to lewdness, to work all uncleanness with greediness. But you have not so learned Christ, if indeed you have heard Him and have been taught by Him, as the truth is in Jesus: that you put off, concerning your former conduct, the old man which grows corrupt according to the deceitful lusts, and be renewed in the spirit of your mind, and that you put on the new man which was created according to God, in true righteousness and holiness.
The new man is meant to put off the old filth and put on the new nature, the new creature, new principles, so that he (she) can lead a new life of righteousness and holiness. Being a believer one must abandon the former ways of life.
The renewed spirit of a believers mind is a way to putting on the new self. If we are willing to clothe ourselves with Christ and live life for Him, we will have a future worth living.
As Christians, our thinking should not be that of the world. We as Christians have to change our mindset as we have become new in Christ. We have to think and do that of GOD otherwise we are cutting him off.
Who doesn’t want a renewed mind, have a Christ like life, a righteous and holy lifestyle, delivered from the old manner of life, and know GOD’s truth.
Ask yourself this question. Do you think you can be a Christian and not change your thinking/ways?