Though the flesh is not eradicated for the Christian, he does not have to obey it (Rom 7:15-25 For that which I do I allow not: for what I would, that do I not; but what I hate, that do I.  If then I do that which I would not, I consent unto the law that it is good. Now then it is no more I that do it, but sin that dwells in me.  For I know that in me ( that is in my flesh,) dwells no good thing: for to will is present with me; but how to perform that which is good I find not.  For the good that I would i do not; but the evil which I would not, that I do.  Now if I do that  I would not, it is no more I that do it, but sin that dwells in me.  For I delight in the law in my members, warring against the law of my mind, and bringing me into captivity to the law of sin which is in my members.  O wretched man that I am!  who will deliver me from the body of this death?  I thank God through Jesus Christ our Lord.  So then with the mind I myself serve the law of God; but with the flesh the law of sin).  He possesses a new nature empowoered by the Holy Spirit.  Since the flesh and the Spirit are totally opposed to each other, the one whom the believer allows to dominate him will take charge in his life produce its own fruit.  The solution to the urges of the flesh lies in acknowledging that the power of sin was nullified by Jesus' death (Rom. 6:11  Likewise reckon youo also yourselves to be dead indeed unto sin, but alive unto God through Jesus Christ our Lord. ) and in living under the control of the Spirit's power (Gal. 5:16 This I say then, Walk in the Spirit, and you shall not fulfil the lust of the flesh).  The latter is a moment-by-moment dependence in faith on the Spirit's power.  The believer must choose by an act of his will to benefit from the Spirit's enablement.