Leviticus 27:10

And if he that sanctified it will redeem his house, then he shall add the fifth part of the money of thy estimation unto it, and it shall be his. 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. If he sanctify his field from the year of jubilee, according to thy estimation it shall stand. But if he sanctify his field after the jubilee, then the priest shall reckon unto him the money according to the years that remain, even unto the year of the jubilee, and it shall be abated from thy estimation. And if he that sanctified the field will in any wise redeem it, then he shall add the fifth part of the money of thy estimation unto it, and it shall be assured to him. And if he will not redeem the field, or if he have sold the field to another man, it shall not be redeemed any more. But the field, when it goeth out in the jubilee, shall be holy unto the LORD, as a field devoted; the possession thereof shall be the priest's. And if a man sanctify unto the LORD a field which he hath bought, which is not of the fields of his possession; Then the priest shall reckon unto him the worth of thy estimation, even unto the year of the jubilee: and he shall give thine estimation in that day, as a holy thing unto the LORD. In the year of the jubilee the field shall return unto him of whom it was bought, even to him to whom the possession of the land did belong. And all thy estimations shall be according to the shekel of the sanctuary: twenty gerahs shall be the shekel. Only the firstling of the beasts, which should be the LORD's firstling, no man shall sanctify it; whether it be ox, or sheep: it is the LORD's. And if it be of an unclean beast, then he shall redeem it according to thine estimation, and shall add a fifth part of it thereto: or if it be not redeemed, then it shall be sold according to thy estimation. Notwithstanding no devoted thing, that a man shall devote unto the LORD of all that he hath, both of man and beast, and of the field of his possession, shall be sold or redeemed: every devoted thing is most holy unto the LORD. None devoted, which shall be devoted of men, shall be redeemed; but shall surely be put to death. And all the tithe of the land, whether of the seed of the land, or of the fruit of the tree, is the LORD's: it is holy unto the LORD. And if a man will at all redeem ought of his tithes, he shall add thereto the fifth part thereof. And concerning the tithe of the herd, or of the flock, even of whatsoever passeth under the rod, the tenth shall be holy unto the LORD. He shall not search whether it be good or bad, neither shall he change it: and if he change it at all, then both it and the change thereof shall be holy; it shall not be redeemed.

A double minded man is unstable in all his ways.