Titus 1:5; Titus 1:7

5 The reason I left you in Crete was that you might straighten out what was left unfinished and appoint elders in every town, as I directed you.
7 Since an overseer is entrusted with God's work, he must be blameless--not overbearing, not quick-tempered, not given to drunkenness, not violent, not pursuing dishonest gain.