The Lord must be given an opportunity to show men their duty and to work upon their minds. No one is to bind himself to serve under the direction of any human being, for the Lord Himself will call men, as of old He called the humble fishermen, and will Himself give them the education He desires them to have. He will call men from the plow and from other occupations to give the last note of warning to perishing souls. There are many ways in which to work for the Master, and the great Teacher will open the understanding of these workers, enabling them to see wondrous things in His Word. (PM 278.2) MC VC