Preach the word; be instant in season, out of season;
reprove, rebuke, exhort with all long suffering and doctrine.
–2 Timothy 4:2 (KJV)–

In those days came John the Baptist, 
preaching in the wilderness of Judaea.
–Matthew 3:2 (KJV)–

From that time Jesus began to preach, and to say,
Repent: for the kingdom of heaven is at hand.
–Matthew 4:17 (KJV)–

—

Frank Viola, Pagan Christianity? (BarnaBooks, 2008), ch. 4: “The Sermon.”

John W. Kennedy, The Torch of the Testimony (SeedSowers, 1983).

E. H. Broadbent, The Pilgrim Church (Gospel Folio Press, 1999).