αἰών
aiṓn
ahee-ohn'
from the same as ἀεί; properly, an age; by extension, perpetuity (also past); by implication, the world; specially (Jewish) a Messianic period (present or future). Compare χρόνος.

KJV translates as: age, course, eternal, (for) ever(more), (n)ever, (beginning of the , while the) world (began, without end)