Cross reference
Leviticus 25:31
31 But the houses of the villages which have no wall round about them shall be reckoned with the fields of the country: they may be redeemed, and they shall be released in the Jubilee.
Psalms 49:7-8
7 None of them can by any means redeem his brother, Nor give God a ransom for him.
8 For the redemption of their life is costly, No payment is ever enough,