Newness

One of the things God did when we became born again was to give us a new heart and then he gave us a new spirit and furthermore he put His spirit within us, we might want to ask the need for him putting his spirit within us: it was simply to help us manage the new heart and unite with our new spirit

• The Law without help from the holy spirit puts man to stumble because the heart of man was desperately wicked it became important to change the heart of man from a heart of stone to that of flesh that the law of God might be written on it, but that was not all in order for us to fully walk in God's righteousness God placed or more explicitly God put his Holy Spirit within us.
• The work of the Holy Spirit in us was to make us to walk in the righteousness of God that the law demanded we do.

The Bible made it clear that the law was perfect so then why does it make people stumble?      

So then, the law is holy, and the commandment is holy, righteous and good. Romans 7:12

• The Law in itself is righteous but obedience to the law became a problem because of the presence of sin, sin made the law to look unrealisable. Sin had control through the law and instead of the law bringing people close to God it drew them farther, for they focused on the judgement of sin than fulfillment of the law, sin became the center of attraction instead of the law which was meant to bring us closer to God, the law was meant to show how good God was but sin seized the occasion that the law was a burden.   
•  Did that which is good, then, become death to me? By no means! Nevertheless, in order that sin might be recognized as sin, it used what is good to bring about my death, so that through the commandment sin might become utterly sinful. Romans 7:13
  The law was given to bring us closer to God. if we do not sin we would be close to God, in all it's application it became important for God to help man, merely giving us the law was not sufficient, it also became necessary to enable us obey the law  from within. even for those who venture to obeying the law there is no pleasure or better still satisfaction from obeying the law because of the absence of the indwelling Holy Spirit.
• The law was good but it made God to appear untouchable, to holy to approach, God intervened and made it easier for us to obey him putting his spirit within us he makes it not only easy to access God but also to obey the law, the holy Spirit also interprets the law
• he makes us one with the law in that the law demands righteousness from us and God had made us righteous via the sacrifice of Jesus, so it becomes easy for a righteous man to walk in righteousness ( we became righteous by accepting Jesus Christ by our persona Lord and savior) where as when sin was dominant it wasn't easy. cos when you don't feel like doing good and you are asked to do good it becomes a struggle, and then after you've obeyed you don't know how long you will sustain it(doing good)
• As it was easy for Jesus to walk righteous on earth it becomes easy for us too because of the indwelling presence of the Holy Spirit
• The New Creation man is a man created by God in his own image and then controlled and maintained by the holy spirit. The Holy Spirit and the spirit of Man becomes one at new birth to produce a new creation who God's Law is engraved in their heart.
  

 As for you, the anointing you received from him remains in you, and you do not need anyone to teach you. But as his anointing teaches you about all things and as that anointing is real, not counterfeit—just as it has taught you, remain in him. 1 john 2:27