Apolos
: a Jewish man from Alexandria who was taught by Aquila and Priscilla
Efesus
: a town in western Asia Minor at the mouth of the Cayster River
Korintus
: a town located on the narrow isthmus connecting the Greek mainland with the Peloponnesus Peninsula to the south
Paulus
: a man from Tarsus who persecuted the church but became a missionary and writer of 13 Epistles