{If thy brother sin against thee} (ean hamart(8873)(8869) adelphos
sou). Literally, commit a sin (ingressive aorist subjunctive of
hamartan(935c)). Aleph B Sahidic do not have "against thee" (eis
se). {Shew him his fault} (elegxon). Such private reproof is
hard to do, but it is the way of Christ. {Thou hast gained}
(ekerd(8873)as). Aorist active indicative of kerdain(935c) in
conclusion of a third-class condition, a sort of timeless aorist,
a blessed achievement already made.