Numbers 6:2-3

6:2 “Speak to the Israelites, and tell them, ‘When either a man or a woman takes a special vow, to take a vow as a Nazirite, to separate himself to the Lord, 6:3 he must separate himself from wine and strong drink, he must drink neither vinegar made from wine nor vinegar made from strong drink, nor may he drink any juice of grapes, nor eat fresh grapes or raisins.

Numbers 6:7

6:7 He must not defile himself even for his father or his mother or his brother or his sister if they die, because the separation for his God is on his head.

Numbers 19:7

19:7 Then the priest must wash his clothes and bathe himself in water, and afterward he may come into the camp, but the priest will be ceremonially unclean until evening.

Numbers 23:24

23:24 Indeed, the people will rise up like a lioness,

and like a lion raises himself up;

they will not lie down until they eat their prey,

and drink the blood of the slain.”

Numbers 30:2

30:2 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.