en_tn/rom/07/21.md

the law in me that I want to do what is good, but that evil is actually present in me

The words "the law in me" refer to the natural human desire to rebel against God and disobey him. Paul calls this a law because he has observed that this is the way people live. It is not a collection of written commands.

that evil is actually present in me

Paul speaks of "evil" here as if it were alive and living inside him. (See: rc://en/ta/man/translate/figs-personification)