Adultery is always stupid. There is no amount of money or ransom that a man will accept for the love and purity of his wife. God gave us marriage and is the very essence of love - and bequeathed to us the gift of loving someone else. One of the most wonderful expressions of His love is seen when a man and woman commit to one another in marriage. That picture is used in Ephesians 5 to show the love of Christ for His church. The love that exists in marriage is supposed to be very strong - and thus breaking it is not something that can be paid back by any amount of money.
We read in Song of Solomon 8:6-7 these words that will help us understand why there is no ransom for adultery. "Put me like a seal over your heart, Like a seal on your arm. For love is as strong as death, Jealousy is as severe as Sheol; Its flashes are flashes of fire, The very flame of the LORD. Many waters cannot quench love, Nor will rivers overflow it; If a man were to give all the riches of his house for love, It would be utterly despised." Love is as strong as death - that is why often a divorce is described as being as devastating as a death in a family. Love is as powerful as death, jealousy is like death, and again is described as like "flashes of fire" and "the very flame of Jehovah." These are not light, fluffy passing descriptions. They are powerful and honestly, frightening! When you choose to love someone and commit to them for life in marriage, this is the power that is released. That is why no ransom will be accepted for adultery - no gift will seem appropriate. We read in Song of Solomon that if a man were to give all the riches of his house for love - the one offered the money would utterly despise the offer. Love is more powerful than ANY amount of money ever offered.
Unfortunately, a movie I know of but have not seen, illustrates our point. The move was called, "Indecent Proposal." I would NOT encourage anyone to see it - so I will describe what I've read about it. In the movie a young couple are given an indecent proposal by a rich man to pay them $1,000,000 for the wife to commit adultery once with him. After weighing what they could do with that much money, they unwisely agree to this indecent proposal. The wife commits adultery and they are paid the money. But the film examines the carnage that follows as, you guessed it, jealousy begins enraging this man over what has happened. Just like it says in Song of Solomon - no amount of money is worth love. Any amount is utterly despised. The man comes to realize too late that the purity and sanctity of their relationship is not worth any sum of money - not even a million dollars. Even a ransom of that enormous amount is something despised and abhorred by a husband and wife. Thus when one partner sins for usually far less, it is a foolish choice indeed that they are making. They are selling out their vows for nothing more than a fleeting promise of forbidden pleasure. What they will pay in the end would make them recoil from such actions. The problem is that "in the moment" they do not think, nor do they reason with any kind of biblical or moral judgment. They destroy themselves and their marriage in a bid for the illusive promise of a night of passionate pleasure. What they most likely do not know is that the indulgence will cost them more than they could ever imagine. This is why, dear saints, Adultery is always stupid.