while... was. Literally in (Greek. en) the being Apollos.
at. in. Greek. en. App-104.
Corinth. All the notices of Apollos are connected with Corinth, except Titus 3:13, when he was apparently in Crete, or expected to pass through it.
upper. Greek. anoterikos. Only here.
coasts. parts, i.e. the highland district, at the back of the Western Taurus range. Paul's route was probably through Derbe, Lystra, Iconium, the Phrygian lake district, and the Lydian part of the Province of Asia. It was about August September, A.D. 54.
certain. Greek. tis. App-123.