John Calvin on 2 Peter 2:3

3. With feigned words. Peter endeavors by all means to render the faithful displeased with ungodly teachers, that they might resist them more resolutely and more constantly. It is especially an odious thing that we should be exposed to sale like vile slaves. But he testifies that this is done, when any one seduces us from the redemption of Christ. He calls those feigned words which are artfully formed for the purpose of deceiving. Either “feigned” or “invented” may be meant by πλαστοῖς: if “feigned,” then they were words used not conveying their real sentiments, but adopted for the purpose of alluring others, as is the case with those who pretend great zeal for truth and great love for souls, when their object is to gain adherents for filthy lucre’s sake. But if “invented” be adopted, then λόγοι must mean narratives or fables, — “invented (or fictitious) fables,” or tales. And this is the rendering of Macknight. And he says, that the Apostle had probably in view the fables concerning the visions of angels and the miracles performed at the sepulchres of departed saints, which the false teachers in the early ages, and the monks in latter times, fabricated, to draw money from the people. Similar are the devices of superstitious men, greedy of gain, in every age. — Ed. Unless then one is so mad as to sell the salvation of his soul to false teachers, let him close up every avenue that may lead to their wicked inventions. For the same purpose as before he repeats again, that their destruction delayed not, that is, that he might frighten the good from their society. For since they were given up to a sudden destruction, every one who connected himself with them, must have perished with them.

2 Peter 2:4-8

4. For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;

4. Si enim Angelis qui peccaverant, Deus non perpercit, sed catenis caliginis in tartarum praecipitatos tradidit servandos in judicium;

5. And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;

5. Et prisco mundo non pepercit, sed octavum justitiae praeconem Noe servavit, diluvio in mundum impiorum inducto;

6. And turning the cities of Sodom and Gomorrha into ashes, condemned them with an overthrow, making them an ensample unto those that after should live ungodly;

6. Et civitates Sodomorum et Gomorrae in cinerem redactas, subversione damnavit, easque statuit exemplum iis qui impia acturi forent;

7. And delivered just Lot, vexed with the filthy conversation of the wicked:

7. Et justum Lot qui opprimebatur à nefariis per libidinosam conversationem eripuit;

8. (For that righteous man dwelling among them, in seeing and hearing, vexed his righteous soul from day to day with their unlawful deeds;)

8. Nam oculis et auribus justus ille, quum habitaret inter ipsos quotidie animam justam iniquis illorum operibus excruciabat;