Or if a soul vows, pronouncing with his lips to do evil, or to do good, whatsoever it be that a man shall pronounce with an oath, and it be hid from him; when he knows of it, then he shall be guilty in one of these.
While it remained, was it not your own? and after it was sold, was it not in your own power? why have you conceived this thing in your heart? you have not lied unto men, but unto God.
When you shall vow a vow unto the LORD your God, you shall not delay to pay it: for the LORD your God will surely require it of you; and it would be sin to you.
And it came to pass, when he saw her, that he tore his clothes, and said, Alas, my daughter! you have brought me very low, and you are one of them that trouble me: for I have opened my mouth unto the LORD, and I cannot go back.