Leviticus 27:33
It shall not be chosen neither good nor bad, neither shall it be changed for another. If any man change it: both that which was changed, and that for which it was changed, shall be sanctified to the Lord, and shall not be redeemed.It shall not be chosen neither good nor bad, neither shall it be changed for another. If any man change it: both that which was changed, and that for which it was changed, shall be sanctified to the Lord, and shall not be redeemed.