¹⁶ “‘If, however, their offering is the result of a vow^(A) or is a freewill offering,^(B) the sacrifice shall be eaten on the day they offer it, but anything left over may be eaten on the next day.^(C)

² “Speak to the Israelites and say to them: ‘If a man or woman wants to make a special vow^(A), a vow of dedication^(B) to the Lord as a Nazirite,^(C)

²¹ If you make a vow to the Lord your God, do not be slow to pay it,^(A) for the Lord your God will certainly demand it of you and you will be guilty of sin.^{(B) 22} But if you refrain from making a vow, you will not be guilty.^{(C) 23} Whatever your lips utter you must be sure to do, because you made your vow freely to the Lord your God with your own mouth.

³⁰ And Jephthah made a vow^(A) to the Lord: “If you give the Ammonites into my hands,

³¹ whatever comes out of the door of my house to meet me when I return in triumph^(A) from the Ammonites will be the Lord’s, and I will sacrifice it as a burnt offering.^(B)”

³⁹ After the two months, she returned to her father, and he did to her as he had vowed. And she was a virgin.

From this comes the Israelite tradition