Preachers who corrupt the Word for effect act like salesmen, trading on Moses’ earthly, practical ministry while rejecting the faith Paul’s ministry requires. The real question is which ministry a corrupted church finds easier to sell. 2 Corinthians 2-4 sets the terms for telling the difference.
Even within the OPC, the church can quietly subordinate Paul’s eternal gospel to something more marketable, the earthly practicality that makes a peddler successful. Christ’s clearing of the temple in Matthew 21 gives a verdict on that kind of selling. The true gospel refuses to master the art of the pitch.
Two central theses anchor 2:19 against the false teaching of 2:18. Christ himself is the foundation of God that ‘standeth firm,’ a person and more than a doctrinal claim. Holding to him keeps the church from being shaken by the world.