“You asked the question, ‘What is grace?’ You then went on to describe the different technical and nontechnical ways that term grace is used in Reformed Theology, but, as far as I could tell, never went on to explain exactly what grace is. I have a couple of questions: What exactly is grace? and, What is the opposite of grace? Thanks.”
i) Saving grace has reference to all the things that God does to and for the elect to ensure their salvation, viz. election, redemption, regeneration, justification, sanctification, preservation, glorification.
ii) Common grace denotes all the things that God does to and for the reprobate to enable them to perform natural goods.
iii) The opposite of grace is:
a) A negative condition: the absence of saving grace and common grace,
b) A positive condition: to be the object of retributive justice.