My landlord is selling the house because he can't afford it anymore. What are my rights as a tenant? If he gets forclosed does the bank have to honor my lease? I don't fell I have any rights at all.

If the landlord sells the house then the new owner has to honor your lease. If the landlord's lender forecloses then whether the lender has to honor your lease depends on the laws in your location. If you're in NJ then you're in luck. Recent NJ law states that a lender cannot evict a tenant only because of foreclosure but must honor the balance of the lease.