of great authority, mighty, potentate

“Potentate (δυνάστης, 'powerful one')” From Concise Bible Dictionary:

Jehovah is the only Potentate (1 Tim. 6:15). The word occurs also in Luke 1:52; Jehovah “hath put down the ‘mighty’ from their thrones.” And in Acts 8:27, the eunuch was a man “of great authority”; they at times had more power than the kings.

“Authority” From Concise Bible Dictionary:

See POWER.

Strong’s Dictionary of Greek Words:

Number:

1413 (find all occurrences in KJV Bible)

Greek:

δυνάστης

Transliteration:

dunastes

Phonic:

doo-nas’-tace

Meaning:

from 1410; a ruler or officer

KJV Usage:

of great authority, mighty, potentate