Hosea 9:7

Israel was to know that the days of her punishment and retribution were imminent because the nation’s iniquity was fat and its hostility to the Lord was great. Another reason for her judgment was that the Israelites had regarded the prophets whom the Lord had sent to them as demented fools (cf. 2 Kings 9:11; Jeremiah 29:26-27). This probably included Hosea.

"The prophet represents Yahweh as saying that the captivity was a payment for the sin of the nation. One of the primary themes of this prophecy is the stark truth that sin demands requital, and Israel was soon to know that by experience. The present respite from national calamity was not to last forever." [Note: McComiskey, p. 144.]