2 Peter 2:20-22

Mace(i) 20 As for those who have renounc'd the pollutions of the world, by their owning Jesus Christ for their Lord and saviour, if they are prevail'd upon to be entangled therein again, their last state is worse than the first. 21 for it had been better for them, not to have made any profession of the gospel, than after they have embraced it, to abandon the holy injunction, that was delivered to them. 22 but the proverb is exactly verified in them, "the dog is return'd to his own vomit: the sow that was wash'd, is wallowing in the mire."