2 Peter 2:19
They promise them freedom, but they themselves are slaves of corruption, since people are enslaved to whatever defeats them.
No one markets slavery.
But everyone hopes you become a slave to their product.
They sell freedom.
They pray for slaves.
Anyone selling you anything other than Jesus is a slave-trader.
That which they offer promises freedom.
Freedom from bad hair, slow streaming, fat rolls, loneliness, ugliness, boredom, etc...
But they are slaves to lesser things.
They are free only in that they give no concern as to what Jesus has done, is doing and will do someday.