Romans 6:8-9
Now if we died with Christ, we believe that we shall also live with Him, knowing that Christ, having been raised from the dead, dies no more. Death no longer has dominion over Him.

My life is dead in Christ, therefore, I live in Christ.
Although death will come to my physical body, death has no power over me because as Christ lives so I shall live.
Death has no dominion over Him and He extends it to those trusting in Him as Savior.

Romans 6:10-12 For the death that He died, He died to sin once for all; but the life that He lives, He lives to God. Likewise you also, reckon yourselves to be dead indeed to sin, but alive to God in Christ Jesus our Lord. Therefore do not let sin reign in your mortal body, that you should obey it in its lusts.