New Testament

False teaching and apostasy were prevalent at the end of the age so Jude was written to encourage the believer to contend or fight for the faith.

John warns the Saints concerning false teachers, deceivers, and antichrists. The presence of antichrist was a sign of the last days.

Peter encourages shepherds to feed the flock of God and expect a reward at the appearing of Christ the Chief Shepherd.

James warns against double mindedness. Many believers were wavering in their faith in the last days of the old covenant due to persecution.