then it shall be, that whatever comes forth from the doors of my house to meet me, when I return in peace from the children of Ammon, it shall be Yahweh's, and I will offer it up for a burnt offering.
The Targumist refers here to the law, Leviticus 27:1-5, where the Lord prescribes the price at which either males or females, who had been vowed to the Lord, might be redeemed. "When a man shall make a singular vow, the persons shall be for the Lord at thy estimation: the male from twenty years old even unto sixty, shall be fifty shekels of silver; and if it be a female, then thy estimation shall be thirty shekels; and from five years old unto twenty years, the male twenty shekels, and for the female ten." This also is an argument that the daughter of Jephthah was not sacrificed; as the father had it in his power, at a very moderate price, to have redeemed her: and surely the blood of his daughter must have been of more value in his sight than thirty shekels of silver.