Deuteronomy 23:21

18 Do not take into the house of the Lord your God, as an offering for an oath, the price of a loose woman or the money given to one used for sex purposes in the worship of the gods: for these two things are disgusting to the Lord your God.

19 Do not take interest from an Israelite on anything, money or food or any other goods, which you let him have:

20 From men of other nations you may take interest, but not from an Israelite: so that the blessing of the Lord your God may be on everything to which you put your hand, in the land which you are about to take as your heritage.

21 When you take an oath to the Lord, do not be slow to give effect to it: for without doubt the Lord your God will make you responsible, and will put it to your account as sin.

22 But if you take no oath, there will be no sin.

23 Whatever your lips have said, see that you do it; for you gave your word freely to the Lord your God.

24 When you go into your neighbour's vine-garden, you may take of his grapes at your pleasure, but you may not take them away in your vessel.