(Date) Dear (Donor): I have received your "Offer of Gift," dated ___________________, by which you, on behalf of the (Name of Company), offered to convey (Description of Property) to the United States of America as a gift. I accept with pleasure your gift and conveyance of the (Property), pursuant to 10 U.S.C. 2601.
Your lender may provide you with a gift letter template. If that's the case, you can simply pass it along to the gift giver and have them fill it out. If the lender doesn't provide you with a gift letter template, be sure to verify the gift letter requirements.