What is the opposite of sin? We have:


Good - Evil
Love - Hate
Virtue - Vice
Bless - Curse
Righteous - Wicked
Obedience - Disobedience
_____? - Sin


I don't mean sin as a general disposition, or original sin. I mean a deed contrary to God's eternal law:



  Sin is an utterance, a deed, or a desire contrary to the eternal law (St. Augustine, Faust 22:PL 42, 418). It is an offense against God. It rises up against God in a disobedience contrary to the obedience of Christ. Sin is an act contrary to reason. It wounds man's nature and injures human solidarity. (The Catechism of the Catholic Church 1871,-1872)


  Sin is the breaking of God's law. (CARM, What is sin?)


  Sin is nothing else than a morally bad act (St. Thomas, "De malo", 7:3), an act not in accord with reason informed by the Divine law. (The Catholic Encyclopedia, Sin)



What are those things that are done in accordance with God's will, reason, and eternal Law? Would we call these acts of obedience? sacrifice? praise? Are they discussed specifically? 

Please note: I'm not asking for anyone to coin an antonym for sin. I'm not asking for examples of individual acts that count as "not being sins". I'd like to know if the Bible or any well-established teaching deals with this sort of deed, and what such deeds might be called. I am not claiming that performing such deeds will grant anyone salvation, that discussion may be set aside. Also, please don't just say something like "the opposite of sin is love" unless there's a good explanation: I'm not asking for dynamic non-equivalence.



Edit: The answer should make it obvious (somewhere) what is the most appropriate way to fill in the following blanks using a single term or concept, and also why (theologically) that term is best:


What Cain did was a sin, but what Joseph did was a _____
Offering up a sacrifice, visiting someone in prison, and praying are all examples of _____
_____ is an utterance, a deed, or a desire in accord with the eternal law.
_____ is the keeping of God's law.
_____ is nothing more than a morally good act, an act in accord with reason informed by the Divine law.


What is the opposite of sin? When someone does something good, what do I call that?
Sin comes from the Greek Hamartia, which carries with it the idea of an archer missing his mark. The opposite of that would be to hit the mark- to succeed. 

I would argue thus that obedience would be the opposite of sin, as it "hits the mark" to which we aim. 

Alternatively, telos - the purpose or aim for which we are destined would be pretty good too. 

Augustine in particular was well known for describing evil as not a thing in and of itself, but rather as a lack of good. It is the lack of substance to the thing that is its nature, not an essence of its own. The same could be said of sin - that it is a lack of the nature of God's desire for us that characterisizes Sin. As such, the opposite of Sin would be the nature of God evident in the life of the person in question. 

And, btw, it totally is fair to say that the opposite of Sin is love- for as Jesus himself said, "if you love me, keep my commandments."