What This Chapter Is About
The law of vows: a man's vow is absolutely binding. A woman's vow may be upheld or annulled by her father (if unmarried) or her husband (if married) on the day he hears it. Silence on the day of hearing constitutes ratification. A widow's or divorced woman's vow is fully binding, like a man's. The legislation is delivered uniquely to the rashei hamattot ('heads of the tribes').
What Makes This Chapter Remarkable
This is the only Torah law addressed specifically to tribal leaders rather than to the general assembly or to Moses and Aaron — suggesting that vow adjudication was a delegated judicial function. The foundational principle is lo yachel devaro ('he must not break his word,' v. 3), literally 'he must not treat his word as empty/profane.' Speech directed to God creates binding obligation. The annulment provisions operate within a narrow window: the day of hearing. After that, silence becomes consent.
Translation Friction
The verb yachel ('break, profane,' v. 3) from the root ch-l-l means to treat something holy as common. We rendered it 'break his word' for clarity, but the Hebrew implies something stronger: making sacred speech profane. The term issar ('binding obligation, restrictive vow,' v. 4) is distinct from neder ('vow') — an issar is a self-imposed prohibition ('I will not eat X'), while a neder is a dedication ('I will give Y to God'). We distinguished them in the notes.
Connections
The inviolability of vows connects to Deuteronomy 23:21-23 ('when you make a vow to the LORD your God, do not delay in fulfilling it') and Ecclesiastes 5:4-5. Jesus references vow-making traditions in Matthew 5:33-37. The Nazirite vow legislation in Numbers 6 is the most developed example of a neder in practice. The annulment provisions find their closest parallel in the Mishnaic tractate Nedarim.