The tenth of Paul's Epistles, and the fifteenth book in the New Testament, is I Timothy. It was written around 64 AD to Timothy, one of Paul's closest friends, who he had converted 15 or so years earlier.
The letter was written shortly after Paul had visited Ephesus, where Timothy had been positioned as Paul's representative. Paul hoped to one day return, but this letter was written to give Timothy advice on his ministry in the meantime.
I Timothy 3:8-13
"Likewise must the deacons be grave, not doubletongued, not given to much wine, not greedy of filthy lucre; holding the mystery of the faith in a pure conscience. And let these also first be proved; then let them use the office of a deacon, being found blameless. Even so must their wives be grave, not slanderers, sober, faithful in all things. Let the deacons be the husbands of one wife, ruling their children and their own houses well. For they that have used the office of a deacon well purchase to themselves a good degree, and great boldness in the faith which is in Christ Jesus"