Hosea 5:3

I know Ephraim, and Israel is not hid from me: for now, O Ephraim, thou committest whoredom, and Israel is defiled.

Hosea 5:3 stands within the larger unit of Hosea 4–7. That unit lays bare the moral condition of Israel. In that same setting it foretells the captivity of the northern kingdom and its eventual restoration.