5 But if her father forbids her when he hears about it, none of her vows or the pledges by which she obligated herself will stand; the LORD will release her because her father has forbidden her.

Read Numbers 30:5 Using Other Translations

But if her father disallow her in the day that he heareth; not any of her vows, or of her bonds wherewith she hath bound her soul, shall stand: and the LORD shall forgive her, because her father disallowed her.
But if her father opposes her on the day that he hears of it, no vow of hers, no pledge by which she has bound herself shall stand. And the LORD will forgive her, because her father opposed her.
But if her father refuses to let her fulfill the vow or pledge on the day he hears of it, then all her vows and pledges will become invalid. The LORD will forgive her because her father would not let her fulfill them.