The gospel of Christ can be preached from every book of the Bible--even Obadiah.
The battle cry of Jesus' preaching was the gospel. . . . Mark 1:14-15.
John lays out the three main themes of the book of Revelation (after Jesus). . . . Revelation 1:9.
John begins his letter to the church by sharing the Gospel. . . . Revelation 1:4-8.
Seek Christ to escape from incapacitating worry. . . . Matthew 6:28-34.
Musings on the end times