Abbott-Smith Manual Greek Lexicon
προ-αμαρτάνω (G4258)
2 *† προ-αμαρτάνω , to sin before : II Co 12:21 13:2 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G4258 · Greek
προαμαρτάνω
proamartano · pro-am-ar-tan'-o
from 4253 and 264; to sin previously (to conversion)