The picture is of the sinner offering his "body parts" to his master or king. AT: "Do not offer yourselves to sin so that you do what is not right" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
AT: "Do not let sinful desires control what you do" or "Do not allow yourselves to do the sinful things you want to do" (See: [[rc://en/ta/man/translate/figs-personification]])
The full meaning can be made explicit. AT: "for you are no longer bound to the Law of Moses, which could not give you the power to stop sinning" (See: [[rc://en/ta/man/translate/figs-explicit]])