Strong's G1840 — ἐξισχύω (verb)
exischuo (ex-is-khoo'-o) v.
1. to have full strength, i.e. be entirely competent
[from G1537 and G2480]
KJV: be able 
Root(s): G1537, G2480 
Compare: G2902, G4599 
Hebrew root: ἰσχύω
Occurrences: 1