When I try to validate the card on this page: http://www.biblegateway.com/passage/?search=John%204&version=NIV
the validator passes and indicates “*.biblegateway.com approved.”
I can see no reason that tweeting that same url wouldn’t cause the card to display, but it’s not. Different variations of the same url (no subdomain, different space encoding) didn’t work either. Thanks in advance for any help.