For a bishop must be blameless, as a steward of God, not self-willed, not quick-tempered, not given to wine, not violent, not greedy for money, but hospitable, a lover of what is good, sober-minded, just, holy, self-controlled, holding fast the faithful word as he has been taught, that he may be able, by sound doctrine, both to exhort and convict those who contradict. Titus 1:7-9
Deacons must be reverent, not double-tongued, not given to much wine, not greedy for money, holding the mystery of the faith with a pure conscience. But let these also first be tested; then let them serve as deacons, being found blameless. Likewise, their wives must be reverent, not slanderers, temperate, faithful in all things.1 Timothy 3:8-11
Early Church Fathers on Bishops Ordination:
Didache (A.D. 80-140) ch. 15:
Appoint, therefore, for yourselves, bishops and deacons worthy of the Lord, men meek, and not lovers of money, and truthful and proved; for they also render to you the service of prophets and teachers. Therefore do not despise them, for they are your honored ones, together with the prophets and teachers.
Clement of Rome (A.D. 96) ch.42:
So preaching everywhere in country and town, they (The Apostles) appointed their first-fruits, when they had proved them by the Spirit, to be bishops and deacons unto them that should believe. And this they did in no new fashion; for indeed it had been written concerning bishops and deacons from very ancient times; for thus said the scripture in a certain place, I will appoint their bishops in righteousness and their deacons in faith.
Polycarp (A.D. 69-156) ch. 5:
In like manner deacons should be blameless in the presence of His righteousness, as deacons of God and Christ and not of men; not calumniators, not double-tongued, not lovers of money, temperate in all things, compassionate, diligent, walking according to the truth of the Lord who became a minister (deacon) of all.
Shepherd of Hermas (A.D. 150):
“And from the fifth mountain, which had green grass and was rugged, they that believed are such as these; they are faithful, but slow to learn and stubborn and self-pleasers, desiring to know all things, and yet they know nothing at all. By reason of this their stubbornness, understanding stood aloof from them, and a foolish senselessness entered into them; and they praise themselves as having understanding, and they desire to be self-appointed teachers, senseless though they are. Owing then to this pride of heart many, while they exalted themselves, have been made empty; for a mighty demon is stubbornness and vain confidence.