John Chrysostom — as excerpted in the Catena Aurea on Matthew 5:14

“Or, in the illustration of the city, He signified His own power, by the lamp He exhorts the Apostles to preach with boldness; as though He said, ‘I indeed have lighted the lamp, but that it continue to burn will be your care, not for your own sakes only, but both for others who shall receive its light and for God’s glory.’”