Eph. 4:21-24 Since you have heard all about him and have learned the truth that is in Jesus, throw off your old evil nature and your former way of life, which is rotten through and through, full of lust and deception. Instead, there must be a spiritual renewal of your thoughts and attitudes. You must display a new nature because you are a new person, created in God's likeness--righteous, holy, and true.
If you are reading this, you have heard about Jesus and you know that He is God who came into our world as man to die on the cross for our sins. You know that He was resurrected from the dead and is now in heaven seated at God's right hand as Lord of life and that He is coming again to take the church out of the world into heaven.
Therefore, you must act on what you know is true. You must get rid of all that is evil in you. You must not live like you did before you got to know Jesus. You cannot be who you were; you are a new creation in Christ. Jesus takes away our sins; He does not tolerate them. He lives in us to make us holy before God. Everything about life without Christ is rotten; it is full of lust and deception. If you are still like that, you are not a child of God.
If you are a true child of God, it will be obvious to you and everyone else. Your nature now is rightous, holy and true. You will be godly in nature. You will be known for the new person you are, not the old person you were. Everything about you is different. You will see life differently; you will live life differently. You will no longer live to promote and please yourself; you will live to promote and please Christ.