'Vow' in the Bible
then it shall come about that the place which the Lord your God will choose for His Name [and Presence] to dwell; there you shall bring everything that I am commanding you: your burnt offerings, your sacrifices, your tithes and the [voluntary] contribution of your hand [as a first gift from the fruits of the ground], and all your choice votive offerings which you vow to the Lord.
You shall not bring the wages of a prostitute or the price of a dog [that is, a male prostitute] into the house of the Lord your God as payment for any vow, for both of these [the gift and the giver] are utterly repulsive to the Lord your God.
“When you make a vow to the Lord your God, you shall not delay to pay it, for He will most certainly require it of you, and a delay would cause you to sin.
You shall be careful to perform that [vow] which passes your lips, just as you have made a voluntary vow to the Lord your God, just as you have promised with your own words (mouth).