Thanks for the discussion of the First Use of the Law the other day. It really helped clarify things for me. Here is how I see it now: There is only one Law. Any time I am “curbed” from overtly committing a sin, it’s working on me. Some things I won’t do because, in my thinking, “it’s just wrong!” That’s the first use. “Thou shalt not kill” has that effect on me. When I read that commandment, though, it also forces me to recognize that, as Christ says, being angry with someone can involve killing him “in my heart,” so I stand guilty of violating that commandment even though I haven’t actually killed anyone and need Christ’s forgiveness (2nd use of the Law). I also need Christ to change my hatred of my enemy into love of my neighbor, and the Gospel motivates me to do this (3rd use).
The first use of the Law is concerned with external behavior, not internal attitudes. The state’s interest is also with external behavior, though the state’s “human laws” are not the same as the “divine laws” (Thank you Nemo and Thomas Aquinas). The state is interested only in “curbing” particular kinds of anti-social behavior. Some of the Commandments have legal correlatives: homicide is outlawed, as is robbery. “Thou shalt not bear false witness against thy neighbor” manifests itself in perjury laws, but the state does not punish most other kinds of lying about a person, much less gossip. The state has no interest in Commandments that are solely about inner attitudes–“honoring” one’s father and mother; coveting.