18 Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the Lord thy God for any vow: for even both these are abomination unto the Lord thy God.
18 You must not bring the earnings of a female prostitute or of a male prostitute
18 You shall not bring the fee of a prostitute or the wages of a dog
18 And don't bring the fee of a sacred whore or the earnings of a priest-pimp to the house of God, your God, to pay for any vow - they are both an abomination to God, your God.
18 You shall not bring the wages of a harlot or the price of a dog to the house of the Lord your God for any vowed offering, for both of these are an abomination to the Lord your God.
18 When you are bringing an offering to fulfill a vow, you must not bring to the house of the Lord your God any offering from the earnings of a prostitute, whether a man or a woman, for both are detestable to the Lord your God.
Matthew Henry's Commentary on Deuteronomy 23:18
Commentary on Deuteronomy 23:15-25
(Read Deuteronomy 23:15-25)
It is honourable to shelter and protect the weak, provided they are not wicked. Proselytes and converts to the truth, should be treated with particular tenderness, that they may have no temptation to return to the world. We cannot honour God with our substance, unless it be honestly and honourably come by. It must not only be considered what we give, but how we got it. Where the borrower gets, or hopes to get, it is just that the lender should share the gain; but to him that borrows for necessary food, pity must be showed. That which is gone out of thy lips, as a solemn and deliberate vow, must not be recalled, but thou shalt keep and perform it punctually and fully. They were allowed to pluck and eat of the corn or grapes that grew by the road side; only they must not carry any away. This law intimated what great plenty of corn and wine they should have in Canaan. It provided for the support of poor travellers, and teaches us to be kind to such, teaches us to be ready to distribute, and not to think every thing lost that is given away. Yet it forbids us to abuse the kindness of friends, or to take advantage of what is allowed. Faithfulness to their engagements should mark the people of God; and they should never encroach upon others.