'Masters' in the Bible

As the cold of snow in the time of harvest,'so is a faithful messenger to them that send him; For he refresheth the soul of his masters.

The words of the wise are as goads; and as nails well fastened are the words of the masters of assemblies, which are given from one shepherd.

and give them a charge unto their masters, saying, Thus saith Jehovah of hosts, the God of Israel, Thus shall ye say unto your masters: