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 5

5:4 They will not frame their doings to turn unto their God: for the spirit of whoredoms is in the midst of them, and they have not known the LORD.