1 Moses told the leaders of the tribes concerning the Israelites, “This is what the Lord has commanded: 2 If a man makes a vow to the Lord or takes an oath of binding obligation on himself, he must not break his word, but must do whatever he has promised. 3 “If a young woman who is still living in her father’s house makes a vow to the Lord or places herself under an obligation, 4 and her father hears of her vow or the obligation to which she has pledged herself, and her father remains silent about her, then all her vows will stand, and every obligation to which she has pledged herself will stand.

31 “It was said, ‘Whoever divorces his wife must give her a legal document.’ 32 But I say to you that everyone who divorces his wife, except for immorality, makes her commit adultery, and whoever marries a divorced woman commits adultery. 33 “Again, you have heard that it was said to an older generation, ‘Do not break an oath, but fulfill your vows to the Lord.’ 34 But I say to you, do not take oaths at all—not by heaven, because it is the throne of God, 35 not by earth because it is his footstool, and not by Jerusalem, because it is the city of the great King.