Where are God's Moral Standards to be found? WSC 41

Because sin entered into the world at the fall, and everyone's moral compass has become damaged and the conscience is seared to a greater or lesser degree, how is the compass to be recalibrated? Where does one recover true knowledge of true morality? This is where Special Revelation comes in - the Scriptures of the Old and New Testaments, specifically, in the moral law as Divinely revealed in the Ten Commandments:

1. The Summary of the Commandments

2. The Form of the Commandments

3. The Depth of the Commandments