The loan from the bank for your house is bind in a contract, your side in the contract is that you will use the loan to buy the house, the bank’s side is that it will receive interest from you on your monthly payments. Another issue with falling into arrears means that you will find it difficult to
remortgage your house at a later date as mortgage companies are loathe to lend to people with arrears. If you fail to pay those monthly payments your loan provider will be forced to seek possession of your house to sell it and pay off your debt.
It is important to bring your problem to them before your debt increases to a point where they cannot help you in any way. You can ask there help to sort out the problems and get back on paying off the monthly payments. There are things that you can do if you foresee mortgage arrears, for ex. you can try to increase your monthly income with a second job, you can try to negotiate with the bank to decrease the amount of your monthly payments and make any necessary arrangements to be able to get out of mortgage arrears.