And when the priests left their labor to impart the word of God unto the people, the people also left their labors to hear the word of God. And when the priest had imparted unto them the word of God they all returned again diligently unto their labors; and the priest, not esteeming himself above his hearers, for the preacher was no better than the hearer, neither was the teacher any better than the learner; and thus they were all equal, and they did all labor, every man according to his strength.
And the elders or high priests who are appointed to assist the bishop as counselors in all things, are to have their families supported out of the property which is consecrated to the bishop, for the good of the poor, and for other purposes, as before mentioned… And the bishop, also, shall receive his support, or a just remuneration for all his services in the church.
Unlike local leaders, who maintain their normal vocations while serving in church assignments, General Authorities set aside their careers to devote their full time to the ministry of their office. The living allowance given General Authorities rarely if ever equals the earnings they sacrifice to serve full-time in the Church.
Marvin K. Gardner, “General Authorities,” p. 539, Encyclopedia of Mormonism