Strong’s Greek
G2426 — hikanotes
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἱκανότης
hikanotes — pronounced hik-an-ot'-ace
from 2425; ability:--sufficiency. see GREEK for 2425
1 occurrence in the KJV.
2 Corinthians 3:5
Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;