'Masters' in the Bible

“Wail, you shepherds, and cry;And wallow in ashes, you masters of the flock;For the days of your slaughter and your dispersions have come,And you will fall like a choice vessel.

“Flight will perish from the shepherds,And escape from the masters of the flock.

“Hear the sound of the cry of the shepherds,And the wailing of the masters of the flock!For the Lord is destroying their pasture,

And command them to say unto their masters, Thus saith the LORD of hosts, the God of Israel; Thus shall ye say unto your masters;

But afterward they backed out [of the covenant] and made the male servants and the female servants whom they had set free return [to them], and brought the male servants and the female servants again into servitude.