Some hold the view that in Jephthah vow with the lord (Judges 11:30-39), he merely sacrificed his daughter as a servant in the tabernacle instead. However, wouldn't the laws of such things also include Leviticus 27:2-4, which would allow Jephthah to gain his daughter back with a few shekels? I ask this cause I really can't understand how the reading of the Leviticus laws go. Does one who vow pay as well as give the person they vow or just the amount one can pay to get the person back?
Jephthah didn't merely sacrificed his daughter as a servant in the tabernacle.
Judges 11:29 Then the Spirit of the Lord came on Jephthah. He crossed Gilead and Manasseh, passed through Mizpah of Gilead, and from there he advanced against the Ammonites. 30And Jephthah made a vow to the Lord: “If you give the Ammonites into my hands, 31whatever comes out of the door of my house to meet me when I return in triumph from the Ammonites will be the Lord’s, and I will sacrifice it as a burnt offering.”
He was heartbroken in
34 When Jephthah returned to his home in Mizpah, who should come out to meet him but his daughter, dancing to the sound of timbrels! She was an only child. Except for her he had neither son nor daughter. 35When he saw her, he tore his clothes and cried, “Oh no, my daughter! You have brought me down and I am devastated. I have made a vow to the Lord that I cannot break.”
Further, his daughter knew her time was short:
36“My father,” she replied, “you have given your word to the Lord. Do to me just as you promised, now that the Lord has avenged you of your enemies, the Ammonites. 37But grant me this one request,” she said. “Give me two months to roam the hills and weep with my friends, because I will never marry.”
She too was heartbroken:
38“You may go,” he said. And he let her go for two months. She and her friends went into the hills and wept because she would never marry.
Finally, the event was a big deal. It was celebrated annually:
39After 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 40that each year the young women of Israel go out for four days to commemorate the daughter of Jephthah the Gileadite.
On the other hand, When Hannah promised to give her son as a servant in the tabernacle, it was explicit.
1 Samuel 1:11 And she made a vow, saying, “Lord Almighty, if you will only look on your servant’s misery and remember me, and not forget your servant but give her a son, then I will give him to the Lord for all the days of his life, and no razor will ever be used on his head.”