'Law of Sin' in the Bible

but I see a different law [at work] in my body, waging [spiritual] warfare against the law in my mind. It brings me into captivity to the law of sin in my body.

Thank God [that I can be rescued] through [the power of] Jesus Christ our Lord. So then, I personally [try to] serve God's law with my mind, but [all too often] I serve the law of sin with my flesh [i.e., submitting in weakness to my human desires].