Abbott-Smith Manual Greek Lexicon
ἐξ-ισχύω (G1840)
1 **† ἐξ-ισχύω [in LXX: Si 7:6 * ;] to have strength enough, to be quite able : c. inf., Eph 3:18 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G1840 · Greek
ἐξισχύω
exischuo · ex-is-khoo'-o
from 1537 and 2480; to have full strength, i.e. be entirely competent