ἐφορμή
From LSJ
εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
English (LSJ)
ἡ,
A way of attack, μία δ' οἴη γίγνετ' ἐφορμή only room for one to attack, Od.22.130, cf. A.R.4.148, Opp.H.4.623; assault, attack, πόλεις ἐφορμαῖς λαβεῖν Th.6.90; enterprise, A.R.4.204.