Numbers 30:2 When a man voweth a vow unto Jehovah, or sweareth 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.

ASV_Strongs⁽ⁱ⁾

2 H376 When a man H5087 voweth H5088 a vow H3068 unto Jehovah, H7650 or sweareth H7621 an oath H631 to bind H5315 his soul H632 with a bond, H2490 he shall not break H1697 his word; H6213 he shall do H3318 according to all that proceedeth H6310 out of his mouth.