1:15 all. Paul is probably writing with intentional exaggeration to make sure his readers see the extent of the disloyalty.
Asia. A Roman province across the Aegean Sea from Greece and today part of western Turkey. Ephesus, where Timothy was serving as Paul’s representative, was the leading city of this province.
Phygelus and Hermogenes. Not mentioned elsewhere in the New Testament. Probably Paul mentions them because he had counted on their support.