convert, turn (again, back again, self, self about)

Dictionary of Biblical Words:

These words are used about thirty-eight times in the New Testament. It is translated “convert” nine times, and about thirty times “turn, return or turn about.” In the present day it is exclusively used for the “new birth,” or “salvation.” In Scripture, however, it is by no means confined to this (see Luke 22:32), and simply signifies a “turning round.” This “turning round” first occurs necessarily when we are turned from darkness to light, but also whenever we are restored after going astray.

Strong’s Dictionary of Greek Words:

Greek:
στρέφω
Transliteration:
strepho
Phonic:
stref’-o
Meaning:
strengthened from the base of 5157; to twist, i.e. turn quite around or reverse (literally or figuratively)
KJV Usage:
convert, turn (again, back again, self, self about)