Vincent's NT Word Studies
10. Keep (thrhsh). See on ver. 8.Offend (ptaish). Lit., as Rev., stumble.
He is guilty (gegonen enocov). Lit., he is become guilty. Enocov, guilty, is, strictly, holden; within the condemning power of. Compare Matthew xxvi. 66; Mark iii. 29; 1 Cor. xi. 27. Huther cites a Talmudic parallel: "But if he perform all, but omit one, he is guilty of every single one."