So sorry to hear of your father's situation.
A Chapter 7 bankruptcy may help him with his financial problems.
A Chapter 7 bankruptcy could discharge (erase) all of the credit card and any other unsecured debt.
In Texas, wages and homestead protected property are exempt from creditor claims under Texas Property Code Section 42.001. (The exception is attachment for child support, IRS taxes and student loans.) Therefore your father's wages and current homestead cannot be legally attached or lost in a bankruptcy.
I hope that the information which I provided was helpful to you.
Best wishes for a successful outcome. If you have additional questions, please do not hesitate to submit them to me directly.
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THIS IS FOR INFORMATION ONLY. NO ATTORNEY-CLIENT RELATIONSHIP EXISTS. PLEASE CONSULT A LAWYER IN YOUR STATE FOR LEGAL ADVICE