The threefold use of the law
According to the Calvin’s classic formulation, God’s law has a threefold use (Institutes, II.vii.6-12).
These are helpfully summarised in the Reformation Study Bible:
Scripture shows that God intends His law to function in three ways, which Calvin crystallized in classic form for the church’s benefit as the law’s threefold use.
Its first function is to be a mirror reflecting to us both the perfect righteousness of God and our own sinfulness and shortcomings.…