2 Peter 2:19
They promise them freedom, but they themselves are slaves of corruption; for whatever overcomes a person, to that he is enslaved — the ironic promise of freedom (eleutherothēta) comes from those in bondage (douleia). The corruption (phthora) they serve represents the ultimate servitude: moral dissolution. The principle of slavery to sin is universal: douleuō indicates not temporary constraint but permanent allegiance.