At 2 Cor 4:2 Calvin astutely observes of those who ‘dress up’ the Gospel to make it acceptable to the ignorant-
For as chaste and virtuous women, satisfied with the gracefulness of natural beauty, do not resort to artificial adornings, while harlots never think themselves sufficiently adorned, unless they have corrupted nature, so Paul glories in having set forth the pure gospel, while others set forth one that was disguised, and covered over with unseemly additions. For as they were ashamed of the simplicity of Christ, or at least could not have distinction from true excellencies of Apostles, they framed a new gospel, not unlike a profane philosophy, swelled up with empty bombast, while altogether devoid of the efficacy of the Spirit. Spurious ornaments of this nature, by which the gospel is disfigured, he calls the concealments of disgrace, because the nakedness of those, who have recourse to concealments and disguises, must of necessity be dishonorable and disgraceful.
Nicely said, J. Calvin. Nicely said.