You don’t get that you are taking that quote from an article written for people who can’t stand religion at all.
Can you quote that from some place reputable?
Even a Google search of the quote puts it into doubt...
http://www.google.com/search?q=Francisco+de+Bustamante+%22the+image+painted+by+Marcos+the+Indian%22&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1