I had an elder come over to 'study' with my wife. I asked him to prove 607. I even printed out the "Calculating 587 B.C. from the Watchtower" table from jwfacts.com (http://www.jwfacts.com/watchtower/607-587.php) and gave it to the elder so he could check the references.
I'm expecting him over tonight to explain exactly how the Watchtower calculated 607 B.C.E as the fall of Jerusalem?