There's nothing simpler than God has commanded eternal life through his son and the whole law is fulfilled in 'Treat others like you want to be treated'
Jesus perfectly fulfilled the love and love is the fulfillment of the law.
The perfect law of God is there for us to see and understand perfection.
We can not say we are perfectly sanctified until we are perfectly keeping the law.
This is a high calling that we do not do to be saved but because we are saved.
The saviour came to save the lost. We are all in need of the saviour and without a law we are not guilty.
To remove the law or parts of the law is to take away the possibility to be sanctified concerning these laws.
We will not be convicted if it is not something we are guilty of.