Hello, I'm a mortgage professional.
There is a process to showing gift funds. First you need a bank statement from the gift donor showing the have the funds and have withdrawn them to give to you, then you need to provide a bank statement showing the funds have been deposited into your bank account. There is also a gift letter form that needs to be filled out.
There are a lot of great low money down programs available that allow gifts, you can even roll closing costs into the loan.
I can explain more.
If you have any other questions or would like help with this you are welcome to get in touch with me