John Gill Bible Commentary

Thou sellest thy people for nought,.... So God, when he is said to deliver up his people into the hands of their enemies, is said to sell them to them; see Jdg 2:14; and selling them for nought suggests, that in their apprehensions he had no esteem of them and value for them; just as men, when they have any person or thing to dispose of they have no regard unto, but choose to be rid of, will part with it for nothing: and as it follows, and dost not increase thy wealth by their price; get nothing by the bargain. This must be understood after the manner of men, and in the opinion of the church, and not as in reality; no otherwise than as it has been true, that God has suffered some of his people to be in the bondage and slavery of mystical Babylon, called Egypt, one part of whose wares and merchandises are slaves and souls of men, Rev 11:8.