answer following question on real estate law:

facts 1. Transfer of Land in FS to John Smith 2. Mortgage to ABC Bank 3. mortgage to DEF Bank 4.Notice of Lease in favour of Joe's Burgers (Tenant) 5. Mortgage to XYZ Bank Mortgage to ABC Bank is maturing soon and that mortgage is not being renewed. John Smith has found a new lender, ECO Bank, that will lend enough to pay off the ABC mortgage. But ECO Bank insists on being in 1st priority. How can ECO Bank get 1st priority?