"It is a trustworthy statement: if any man aspires to the office of overseer, it is a fine work he desires to do". (1 Timothy 3:1)
"Therefore, brethren, select from among you seven men of good reputation, full of the Spirit and of wisdom, whom we may put in charge of this task." (Acts 6:3)
"How then will they call on Him in whom they have not believed? How will they believe in Him whom they have not heard? And how will they hear without a preacher?" (Romans 10:14)