So Jesus died for all our sins past, present and future. Therefore there can be no law against anything any more if it is all forgiven.

²³ All things are lawful for me, but not all things are helpful; all things are lawful for me, but not all things edify. 

1 Corinthians 10:23

Logical.

But then why not go out and sin?  Because God knows that the response of a believing heart to the revelation of Jesus’ death is gratefulness and a desire to please Him (1 John 4:19).  Paul says we died to sin when Jesus died (Romans 6:1-11).  The revelation that God sent His Son to die for us works in our hearts automatically and we want to do what pleases Him (Romans 7:23).  We are wed to Him in a way and forever spoilt for anything else.

However in some ways we haven’t changed.  The old nature still wants to do the wrong thing (Romans 7:14-25).  So the answer is to offer ourselves, our every member, to God as a love slave to Him (Romans 12:1-2). Then He will show us what to do and He will work within us to will and to do according to His good pleasure (Philippians 2:12).