πολλῶν ὁ καιρὸς γίγνεται διδάσκαλος → the critical moment will turn out to be the teacher of many things
-α, -ον derbeo, de Derba, Act.Ap.20.4.
from Δέρβη; a Derbaean, Derbæan or inhabitant of Derbe: of Derbe.