Some people have seemed to indicate that the NT (New Testament) eliminated the law. That's not true.  Be careful that you don't accept rationalized supposition to interpret Scripture. You can rationalize anything, but if you believe that God will give the same revelation to everyone who's willing to submit to Him and ask for revelation, then the teaching of Scripture is clear:

Many NT verses show clearly that the law is in force. The good news is that, regardless of the sins we have committed, if we repent (turn from our sin), and commit ourselves to Christ, then He forgives us. Plus, He gives us power to walk in the Spirit rather than the flesh. Both gifts (forgiveness, and the will and power to obey Him who is love) are free to all who will receive, but God forces Himself on no one. Those who reject Jesus have rejected this salvation, and the Bible says that they reject Him because they love darkness more than light.

Those who walk in the Spirit fulfill the law, which is love. Those who reject Christ are judged by the law. For those who accept Christ, the commandments become promises of righteousness.   Just change the inflection: Thou shalt not steal, and that's a promise.

We are all born as slaves to sin, every one of us, but we can be free. Through Christ, all can actually be removed from the family of Satan and born into the family of God. God loves us so much that He provided a way--Jesus.  The cost was unthinkably high, but He loves us so. 

In this new family, the Holy Spirit is training us as growing children. If I'm born with a tendency toward, let's say, drunkenness, I can be freed. The same could be said for lying, smoking, drugs, sexual sins, envy, greed, violence, worshipping false gods, etc. Without the free gift (grace), we remain slaves of sin, for without Jesus, we can do nothing. In fact, all human-generated righteousness, Christian or not, is as filthy rags compared to what God requires. If we do anything pure and righteous, it's God's grace in us that does the work. He can do good works through us. When we turn from sin and to Jesus, we are new creatures. The old is passed away, though our bodies are not yet redeemed, hence the inner struggle.

If we're tempted to sin, we disregard the flesh, the emotion, the soulish nature, and we walk in the Spirit. If we stumble, we repent and we're forgiven; we get up and begin to walk in the Spirit again. We don't identify with our sin. We identify with Christ and His righteousness in us. Christians have scarcely scratched the surface of being able to appropriate what they have been so freely given, but some are now progressively pressing in. Whoever will may come.

Here are some Scriptures that back this up.  There is a Bible on this site.