Devarim 23:21-23

Orthodox Jewish Bible

^21 (22) When thou shalt vow a neder unto Hashem Eloheicha, thou shalt not delay to pay it; for Hashem Eloheicha will surely require it of thee; and it would be chet (sin) in thee.

^22 (23) But if thou shalt abstain from vowing, it shall be no chet in thee.

^23 (24) That which is gone out of thy lips thou shalt be shomer over and perform; even a vow thou hast voluntarily vowed unto Hashem Eloheicha, which thou hast promised with thy mouth.