Hosea is the first book of the twelve minor prophets. Because the times are outwardly prosperous, idolatry prevails and immorality is rampant. Hosea urges a return to God in order that He may show mercy and forgiveness.

Hosea 12

12:10 I have also spoken by the prophets, and I have multiplied visions, and used similitudes, by the ministry of the prophets.