I can agree that if someone was given an interest-free loan, say by a friend, and then uses bankruptcy law to avoid repayment, it is morally the same as stealing. But it seems to me that if a bank is lending out money at 15%-20%, as is common with credit cards, debtors are paying through the nose, right from the start, to reimburse the bank for insolvency risk. The high interest they have already paid during the period they did make monthly payments was equivalent to insurance against their own bankruptcy. So if they do go bankrupt, and there is no bankruptcy fraud, it is unfortunate but not, morally, stealing.
If you never heard of The Year of Jubilee, the Day of Atonement, or understand why God commanded it, they there must be plenty of "Biblical priniciples that you dont know of".
People who have never read the Bible, and certainly people who have never read Leviticus, should never make such wild statements as you just did.
The Year of Jubilee, is known by all jews and protestants, and anyone who has read the Bible. All debts canceled, all mortages ended, all foreclosed property returned, all people sold into slavery freed, etc.
It is "scary" that YOU have never read Leviticus(esp Leviticus 25 and 27), that you have never heard of The Year of Jubilee, and that you equated a command of God(periodically forgiving debt) to "stealing".
It is scary that you pretend to speak as either a jew or christian yet you know nothing of this holy principle, or of the principle of "forgiving", not only explicit in The Year of Jubilee, but in the entire Bible itself. There is nothing more Biblical that the principle of forgiving - even if you never specifically read Leviticus or heard of The Year of Jubilee. A true jew or christain sees no contradiction in forgiving, or in forgiving debt periodically.