If you continue without being honest you are not only opening yourself to legal issues, but you are putting everyone involved in danger of losing one way or another. Your lender could end up having to pay legal fees to prove they did not know that your situation changed prior to closing, The Seller will be blindsided and have to put the property back on the market. Both Agents will have spent a good amount of time to get a deal done only to find out it was all for nothing, and still have to prove that they had no knowledge of your job loss.
The bottom line is that fraud is fraud, and it's a big part of this country's current economic crisis. Best of Luck!