Closing Income Information On buying A home?

Iam in the process of buying a 1st home, Iam about two weeks away from the closing and the company I have worked for the last 19 years downsized and let me go, I havent told the bank yet about this what happens if I keep my mouth shut??? will they check my employer before closing? do I have to sign anything stating my employment?? I really don't want to loose this house, and my payments on the house will actually be easier to make then the rent were iam now, & would it make a diffrence to add another person to the loan who is employed?