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.
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Women and Vows – (Numbers 30:3-16) KJV