From The Didache, chapter 15.

1 Elect, therefore, for yourselves bishops and deacons worthy of the Lord, men who are meek and not covetous, and true and approved, for they perform for you the service of prophets and teachers.

2 Do not, therefore, despise them, for they are those who are honoured among you, together with the prophets and teachers.

3 Rebuke one another, not in wrath but peaceably, as ye have commandment in the Gospel; and, but let no one speak to any one who walketh disorderly with regard to his neighbour, neither let him be heard by you until he repent.

4 But your prayers and your almsgivings and all your deeds so do, as ye have commandment in the Gospel of our Lord.