On hearing that in our district  some men were infected with the plague of Marcion he wrote to the then bishop charging him to drive out the plague, and proffering him the aid of the imperial edicts. I have said enough to show how, to use the words of the divine apostle, he carried in his heart "the care of all the churches." 
His boldness may also be learnt from other sources.
 i.e.at Cyrus.  2 Corinthians 11:28
 2 Corinthians 11:28