Throughout history and even today errand boys are used to send messages that need to be personally delivered. The errand boy is not responsible for the message delivered nor the contents of the note or message. His responsibility is to deliver the message verbatim (word for word) of what the sender has commanded. It would be useless for the receiver to argue with the errand boy or messenger, since his job is to deliver the message.
In Mark 10:42-44 (Also Luke 22:25-26), Jesus speaks of the equivalent to the errand boy of which we just spoke. Upon hearing of the division that pride and self-exaltation had caused among His disciples, He instructed them in the structure of the brethren, “Ye know that they which are accounted to rule over the Gentiles exercise lordship over them; and their great ones exercise authority upon them. But so shall it not be among you: but whosoever will be great among you, shall be your minister: And whosoever of you will be the chiefest, shall beservant of all.” In order to understand
just exactly what Jesus said, we must understand the words that Jesus used. The one that will be great among you let him be an errand boy (Greek – diakonos – an attendant from diako – to run errands). He that will be chiefest, let him be a bond slave (Greek – doulos – a slave in subjection).