Above the law episode 3( The Law of God)

As Christians, we turn to the Bible for instructing us as how we WALK AS BELIEVERS in Jesus/Yahshua. Are we using the entire word trusting in its pages to guide, lead and instruct us in righteousness or do we only use the second part( N T) of the bible, while omitting the first part( O T)?
ReBoot the Root continues to teach about 'Are Christians still expected to keep the law??"