http://www.abarim-publications.com/Meaning/Pantokrator.html#.XAq2svZFw5s

The name Pantokrator became in post-Biblical times applied to Jesus for the sole purpose of providing emperors — in turn conveniently dubbed the representatives or even more bodacious: the replacements of Christ on earth — legitimacy for their regimes. It was in their obvious interest to portray Christ as a remote emperor, who ruled by means of local leaders (clergy), since they did the same thing and could hence derive the abysmal political doctrine of "right of kings".