A true union with Messiah as our Master means that we are no longer slaves to sin and we will break free from that bondage. Sanctification gives us freedom, but that freedom is not a license, as we shall soon see.
We are justified through the blood of Messiah. It is through His blood that we are delivered from the wrath of Elohim (His judgment). It is through the faithfulness of the Father (who promised to Abraham, Isaac, and Jacob that He would save their people) that He sent Yeshua Messiah to justify His people through His blood. While all people will still have to give an account for all that we do, His chosen ones avoid the wrath of total destruction caused by sin.