In his book The Unity of the Twelve, Paul House argues that sin, judgment, and restoration are three themes extant in each prophet. He argues these themes also organize the Twelve (i.e., the Minor Prophets), where the first six books stress sin, the next three judgment, and the last three judgment. For him, this is the plot line that puts the Twelve together.
Complementing that vision, while not completely affirming, Richard Alan Fuhr and Gary E. Yates, in The Message of the Twelve, present four themes that repeat through the Twelve: (1) repentance and return, (2) the Day of the Lord, (3) a new covenant, and (4) the coming messiah can be found in the Twelve. I will outline these below. Continue reading
There are four “major prophets” in the Old Testament—Isaiah, Jeremiah, Ezekiel, and the Twelve. While the first three major prophets are each associated with one prophet, the Minor Prophets (i.e., the Twelve) is a collection of twelve different prophets. Together, the twelve Minor Prophets compose a book of prophecy approximately the same size as the other Major Prophets.
Via Emmaus 