Leviticus 27:16
And if a man shall sanctify unto the LORD some part of a field of his possession, then thy estimation shall be according to the seed thereof: an homer of barley seed shall be valued at fifty shekels of silver. And if a man shall sanctify unto the LORD some part of a field of his possession, then thy estimation shall be according to the seed thereof: an homer of barley seed shall be valued at fifty shekels of silver.
A field of one's own possession set apart to the Lord was to be valued not by its market price but by the seed required to sow it, at the rate of fifty shekels of silver for a homer of barley seed. This belongs to the law governing substance and property made sacred to God by vow, with fixed rules for valuation and for redemption. It stands among the types of the sanctuary, in connection with the court where the offerings were slain.
Dedicated land or a house could be retained by paying the priest's valuation with a fifth added to it. Such retention did not void the vow, nor did it leave the owner free to use the property as if it had never been made sacred. Whatever had been sanctified required an added amount if it was redeemed or exchanged. For a member of the household devoted by vow, redemption was by the priest's valuation, which shows that Jephthah's daughter was devoted to the service of the Lord rather than offered as a burnt sacrifice.
Elsewhere in the same chapter, a thing set apart or devoted to the Lord can be an irrevocable ban, with the thing or person devoted to destruction. Anathema means something set apart, separated and devoted under curse or ban. It denotes the absolute, irrevocable and entire separation of a person from the fellowship of the faithful, from the number of the living, or from the privileges of society, and the devoting of any man, animal, city or thing to be rooted out, destroyed, consumed and annihilated.