We serve in the new way of the Spirit, and not in the old way of the written code

 Romans 7:1-6

For example, by law a married woman is bound to her husband as long as he is alive, but if her husband dies, she is released from the law that binds her to him. 

So, my brothers and sisters, you also died to the law through the body of Christ, that you might belong to another, to him who was raised from the dead, in order that we might bear fruit for God. For when we were in the realm of the flesh, the sinful passions aroused by the law were at work in us, so that we bore fruit for death. But now, by dying to what once bound us, we have been released from the law so that we serve in the new way of the Spirit, and not in the old way of the written code.

Paul has already made it plain that the law cannot save: we cannot work our passage to heaven by keeping rules. The law is also limited to a person's lifetime. The new life God gives releases us from the law.

Why?

If we died to the law seem we died to the world, actually, all of the men are limited in the law, when we died to the law, we are not limited by the law. One day all men will end his life in this world, there is no way to heaven for their sins. 

Jesus Chris free us from the law through faith so we are free from the law. free from evil. But be a servant of Jesus, we belong to another country in heaven.

The new way of the Spirit: the new way guided by the Holy Spirit, and not in the old way of the written code.  Written code is a ceremony,  many people are bind in this code, it is meaningless to those who die in the law.

How?

We are free from the Law, but be careful do not to fall into the trick of the law for our weak flesh.