Meaning: To sell oneself (as a slave) to do evil.
1ki 21:20 And Ahab said to Elijah, hast thou found me, O mine enemy? And he answered, I have found thee; because thou hast SOLD thyself to work evil in the sight of the LORD.
2ki 17:17 And they caused their sons and their daughters to pass through the fire, and used divination and enchantments, and SOLD themselves to do evil in the sight of the LORD, to provoke him to anger.
Isa 52:3 For thus saith the LORD, Ye have SOLD yourselves for nought; and ye shall be redeemed without money.