Strong’s Greek
G1756 — energes
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐνεργής
energes — pronounced en-er-gace'
from 1722 and 2041; active, operative:--effectual, powerful. see GREEK for 1722 see GREEK for 2041
3 occurrences in the KJV.
1 Corinthians 16:9
For a great door and effectual is opened unto me, and there are many adversaries.
Philemon 1:6
That the communication of thy faith may become effectual by the acknowledging of every good thing which is in you in Christ Jesus.
Hebrews 4:12
For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.