Colossians 3:5-9

So kill (deaden, deprive of power) the evil desire lurking in your members [those animal impulses and all that is earthly in you that is employed in sin]: sexual vice, impurity, sensual appetites, unholy desires, and all greed and covetousness, for that is idolatry (the deifying of self and other created things instead of God). It is on account of these [very sins] that the [holy] anger of God is ever coming upon the sons of disobedience (those who are obstinately opposed to the divine will), Among whom you also once walked, when you were living in and addicted to [such practices]. But now put away and rid yourselves [completely] of all these things: anger, rage, bad feeling toward others, curses and slander, and foulmouthed abuse and shameful utterances from your lips! Do not lie to one another, for you have stripped off the old (unregenerate) self with its evil practices, Colossians 3:5-9

Ok, how do we kill these evil desires? Do we make rules and laws that say not to do them? No, we can’t do that, because as our Father told us earlier in Colossians laws only puff us up. So if we make laws that tell us not to do these things, we will actually end up doing them more. Do we preach continually and tell people not to do them? I was raised in churches that tried that and all of these things flourished, even though we were told weekly not to do them. So how can we truly kill and deprive evil?

And you will know the Truth, and the Truth will set you free. John 8:32

It is only the Truth that will set us free and the Truth is Jesus has set us free from any and all laws that could convict us of sin. We are now liberated and free from the bondage of laws. We cannot be convicted. Yep, because of Jesus' success, we are above the law! 

Likewise, my brethren, you have undergone death as to the Law through the [crucified] body of Christ, so that now you may belong to Another, to Him Who was raised from the dead in order that we may bear fruit for God. Romans 7:4

The Truth is also that our Father is completely responsible for sanctifying us and purifying us. If He isn't doing it, it ain't getting done. 

And may the God of peace Himself sanctify you through and through [separate you from profane things, make you pure and wholly consecrated to God]; and may your spirit and soul and body be preserved sound and complete [and found] blameless at the coming of our Lord Jesus Christ (the Messiah). Faithful is He Who is calling you [to Himself] and utterly trustworthy, and He will also do it [fulfill His call by hallowing and keeping you]. 1 Thessalonians 5:23-24

Our Father is Faithful to separate us from profane things. We can’t separate ourselves from evil, we can’t kill the evil desires in us, only our Father can and He is faithful to do it. So the only way for us to kill the evil is to be empowered by the Truth that only our Father can do it for us. God alone is our Gardener, Potter, Vine, and Head. We can do nothing without Him and thank God the Truth is that we are never without Him. We can relax and be completely assured that all things are going to work out for our good and we can have the peace that there is absolutely no condemnation for us anymore. 

We are assured and know that [God being a partner in their labor] all things work together and are [fitting into a plan] for good to and for those who love God and are called according to [His] design and purpose. Romans 8:28

Therefore, [there is] now no condemnation (no adjudging guilty of wrong) for those who are in Christ Jesus, who live [and] walk not after the dictates of the flesh, but after the dictates of the Spirit. For the law of the Spirit of life [which is] in Christ Jesus [the law of our new being] has freed me from the law of sin and of death. Romans 8:1-2