1 There is now therefore no condemnation to them that are in Christ Jesus, who walk not according to the flesh.
2 For the law of the spirit of life, in Christ Jesus, hath delivered me from the law of sin and of death.
3 For what the law could not do, in that it was weak through the flesh; God sending his own Son, in the likeness of sinful fleshand of sin, hath condemned sin in the flesh;
4 That the justification of the law might be fulfilled in us, who walk not according to the flesh, but according to the spirit.
5 For they that are according to the flesh, mind the things that are of the flesh; but they that are according to the spirit, mind the things that are of the spirit.
6 For the wisdom of the fleshis death; but the wisdom of the spirit is life and peace.
7 Because the wisdom of the fleshis an enemy to God; for it is not subject to the law of God, neither can it be.
8 And they who are in the flesh, cannot please God.
9 But you are not in the flesh, but in the spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
10 And if Christ be in you, the body indeed is dead, because of sin; but the spirit liveth, because of justification.
11 And if the Spirit of him that raised up Jesus from the dead, dwell in you; he that raised up Jesus Christ from the dead, shall quicken also your mortal bodies, because of his Spirit that dwelleth in you.
12 Therefore, brethren, we are debtors, not to the flesh, to live according to the flesh.
13 For if you live according to the flesh, you shall die: but if by the Spirit you mortify the deeds of the flesh, you shall live., let him be to thee as the heathen and publican.
I am reading Marks of a True Conversion right now by George Whitefield
"Verily, I say unto you, except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven."Matthew 18:3
And as a little child gives up its hand to be guided by a parent or a nurse, so those who are truly converted, and are real Christians, will give up the heart, their understandings, their wills, their affections, to be guided by the word, providence, and the Spirit of the Lord. Hence it is, that the Apostle, speaking of the sons of God, says, "As many as are led by the Spirit of God, they are (and to be sure he means they only are) the sons of God."