Psalm 44:12
Thou sellest thy people for nought, and dost not increase thy wealth by their price.
Cross-reference
Deuteronomy 32:30 uses the same 'sold them' metaphor: 'unless their Rock had sold them' — directly echoing the lament of being sold for a pittance.
Isaiah 50:1 explains why God sold his people: 'for your iniquities you were sold' — giving the reason behind the sale lamented in Psalm 44:12.
Isaiah 52:3 echoes the exact phrase: 'You were sold for nothing' — and promises redemption without money, contrasting the sale.
Judges 2:14 explicitly says God 'sold them into the hand of their enemies' — the same divine action described in Psalm 44:12.
In Judges 10:7, God sells Israel into enemy hands — the same divine action of selling his people for a pittance.
Isaiah 52:5 echoes being taken away for nothing, with God's name blasphemed — reinforcing the cheap sale and resulting dishonor.
Nehemiah 5:8-12 rebukes selling fellow Jews into slavery — a human version of the divine sale lamented in Psalm 44:12.