2 Peter 2:19

“While they promise them liberty, etc.] Not Christian liberty, which lies in a freedom from sin, its dominion, guilt, and condemnation, and in serving God with liberty, cheerfulness, and without fear; but a sinful carnal liberty, a liberty from the law of God, from obedience to it as a rule of walk and conversation, and from the laws of men, from subjection to the civil magistrate, and from servitude to masters, and obedience to parents; a liberty to lay aside and neglect the ordinances of the Gospel at pleasure, and to live in all manner of sin and wickedness; a liberty which is contrary to the nature, will, and work of Christ, to his Spirit, and to the principle of grace in the heart, and…”

“promise . . . liberty--(Christian)--These promises are instances of their "great swelling words" (Pe2 2:18). The liberty which they propose is such as fears not Satan, nor loathes the flesh. Pauline language, adopted by Peter here, and Pe1 2:16; see on Pe1 2:16; (compare Pe2 3:15; Rom 6:16-22; Rom 8:15, Rom 8:21; Gal 5:1, Gal 5:13; compare Joh 8:34). corruption--(See on Pe2 2:12); "destroyed . . . perish . . . corruption." of whom--"by whatever . . . by the same," &c.”

“While they promise them liberty - True religion always promises and produces liberty (see the notes at John 8:36), but the particular liberty which these persons seem to have promised, was freedom from what they regarded as needless restraint, or from strict and narrow views of religion. They themselves are the servants of corruption - They are the slaves of gross and corrupt passions, themselves utter strangers to freedom, and bound in the chains of servitude. These passions and appetites have obtained the entire mastery over them, and brought them into the severest bondage. This is often the case with those who deride the restraints of serious piety. They are themselves the slaves of…”

“While they promise them liberty - From needless restraints and scruples; from the bondage of the law. Themselves are slaves of corruption - Even sin, the vilest of all bondage. 2 Peter 2:20”

“2:19 One of the great lures of false teaching through the centuries has been the promise of freedom from authority, but such freedom is illusory (Rom 6:16). The false teachers, while reveling in their freedom from authority (see 2 Pet 2:10), were in fact slaves to sin and corruption.”

“they promise: Gal 5:1, Gal 5:13; Pe1 2:16 they themselves: Joh 8:34; Rom 6:12-14, Rom 6:16-22; Tit 3:3 overcome: Pe2 2:20; Isa 28:1; Jer 23:9; Ti2 2:26 2 Peter 2:20”