Galatians 2:19 For I through the law died to the law that I might live to God.
Being dead means you cannot go looking for something; ergo, being dead to the law means you should not go looking for the law. In this context, looking for justification through the law should not be done because we are dead to that law.
The law is there to show us that we are sinners and steer us in the right direction; it is not there to say ‘follow me and I will save you’.
It is only Christ who can say that!