The most powerful teaching method is example. King Benjamin's ministry is an example of service to his people. Certainly, if the king can serve the subjects, then the subjects can serve the king and each other. This concept was beautifully taught by the Savior when he washed the feet of the apostles:
'He riseth from supper, and laid aside his garments; and took a towel, and girded himself.
After that he poureth water into a bason, and began to wash the disciples' feet, and to wipe them with the towel wherewith he was girded.
Then cometh he to Simon Peter: and Peter saith unto him, Lord, dost thou wash my feet?
Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter…
So after he had washed their feet, and had taken his garments, and was set down again, he said unto them, Know ye what I have done to you?
Ye call me Master and Lord: and ye say well; for so I am.
If I then, your Lord and Master, have washed your feet; ye also ought to wash one another's feet.
For I have given you an example, that ye should do as I have done to you.
Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than he that sent him.
If ye know these things, happy are ye if ye do them.' (Jn 13:4-7, 12-17)