Those who are unfaithful to the Lord

Hosea 5:1-15
They are unfaithful to the Lord; they give birth to illegitimate children. When they celebrate their New Moon feasts,  he will devour their fields.
I am like a moth (蛾)to Ephraim,  like rot(腐爛) to the people of Judah.
When Ephraim saw his sickness, and Judah his sores, then Ephraim turned to Assyria, and sent to the great king for help. But he is not able to cure you, not able to heal your sores.
Then I will return to my lair  until they have borne their guilt and seek my face—
in their misery they will earnestly seek me.
A generalation has grown up to whom God is a stranger. The alarm is sounded on Judah's borders, for Judah shares the sin to which Israel has become addicted.
Not even the great king of Assyria can save them from God's judgment.
These verses probably refer to the Israel/Syria war against Judah.
Verse 15 expresses God's longing. Will suffering achieve what prosperity has not serving, as C.S. Lewis puts it. As God's 'megaphone to rouse a deaf world'?
Why?
When listen to the word of man there will be take his responsibility for his sins. God is the strength and fortress. Only the Lord can help us, deviver us from the dead and destruction.
God have mercy waiting for anyone turn back to Him.
How?\
Israel and Judah are unfaithful to the Lord, the consequence will be my warning message.