John 13:13 - Matthew Poole's English Annotations on the Holy Bible

The disciples in their ordinary discourses called Christ Master and Lord; nor was it a name improper for him, for he was their Master to instruct them, their Lord to rule, guide, and govern them: now, saith our Saviour, disciples ought to obey their master, servants ought to obey their lord, and disciples also ought to imitate their master.