Philippians 1:1
Paul and Timotheus, the servants of Jesus Christ, to all the saints in Christ Jesus which are at Philippi, with the bishops and deacons:
Torrey's Topical Textbook—AKJV

1 Timothy 3:1
This is a true saying, If a man desire the office of a bishop, he desires a good work.
Torrey's Topical Textbook—AKJV

Titus 1:7
For a bishop must be blameless, as the steward of God; not self-willed, not soon angry, not given to wine, no striker, not given to filthy lucre;
Torrey's Topical Textbook—AKJV