Numbers 30:3

1 And Moses spake unto the heads of the tribes concerning the children of Israel, saying, This is the thing which the LORD hath commanded.

2 If a man vow a vow unto the LORD, or swear an oath to bind his soul with a bond; he shall not break his word, he shall do according to all that proceedeth out of his mouth.

If a woman also vow a vow unto the LORD, and bind herself by a bond, being in her father’s house in her youth;

4 And her father hear her vow, and her bond wherewith she hath bound her soul, and her father shall hold his peace at her: then all her vows shall stand, and every bond wherewith she hath bound her soul shall stand.

5 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.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
And if a woman in her father’s house during her youth makes a vow to the LORD or obligates herself by a pledge,
KJV
If a woman also vow a vow unto the LORD, and bind herself by a bond, being in her father’s house in her youth;
WEB
“Also, when a woman vows a vow to the LORD and binds herself by a pledge, being in her father’s house, in her youth,
ASV
Also when a woman voweth a vow unto Jehovah, and bindeth herself by a bond, being in her father`s house, in her youth,
DARBY
If a woman also vow a vow to Jehovah, and bind herself by a bond, in her father's house in her youth,
BLB
Or if a woman makes a vow to YHWH and binds [herself] by some binding obligation while in the house of her father in her youth,
ÅB
Og når en ung kvinne som enda er hjemme hos sin far, gjør Herren et løfte eller forplikter seg til avhold i noen ting,
OTB
Hvis en ung kvinne, som fortsatt bor i sin fars hus, gir et løfte til Herren eller binder seg med et løfte,
B1930
Og når en ung kvinne som ennu er hjemme hos sin far, gjør Herren et løfte eller forplikter sig til avhold i nogen ting,

Study notes (Tyndale)

Original text and word study