New Testament...

I Timothy 3:8-10
3:8 Likewise the deacons must be grave, not double-tongued, not given to much wine, not greedy of filthy lucre;

3:9 Holding the mystery of the faith in a pure conscience.

3:10 And let these also first be proved; then let them use the office of a deacon, being found blameless.


    By Revelation...

DC 83:22-23
83:22 And, behold, the high priests should travel, and also the elders, and also the lesser priests; but the deacons and teachers should be appointed to watch over the church, to be standing ministers unto the church.