Hosea's message was that unfaithful Israel should return to the Lord for spiritual revival. Hosea was a prophet in the Old Testament who was called by God to preach to the people of Israel, who had turned away from God and were living in sin. His message was that they needed to repent and turn back to God in order to experience spiritual renewal and restoration. Hosea used the metaphor of a broken marriage to describe the relationship between God and Israel, emphasizing that Israel's unfaithfulness was like that of an adulterous spouse. Therefore, Hosea urged Israel to abandon their idolatry and sinful ways and to return to God with sincerity and humility.