All the kingdoms of the earth may know that you, Lord, are the only God.

Isaiah 37:1-20
When King Hezekiah heard this, he tore his clothes and put on sackcloth and went into the temple of the Lord. It may be that the Lord your God will hear the words of the field commander, whom his master, the king of Assyria, has sent to ridicule the living God, and that he will rebuke him for the words the Lord your God has heard. Therefore pray for the remnantthat still survives.
Hezekiah's Prayer.
It is true, Lord, that the Assyrian kings have laid waste all these peoples and their lands. They have thrown their gods into the fire and destroyed them, for they were not gods but only wood and stone, fashioned by human hands.  Now, Lord our God, deliver us from his hand, so that all the kingdoms of the earth may know that you, Lord, are the only God.
Why?
Israelites was sin against the Lord, but king Hezekiah was struggled to lead his nation to the right way to honor the name of God. The situation was very worse he had not capability to fight against Assyria's army, but Sennacherib has sent to ridicule the living God. From king to the children everyone tore his clothes and put on sackcloth and went into the temple of the Lord. God listened to their prayer.
No matter how difficult the situation it is, pray to the Lord, God has mighty hands and strength to deliver us. God is the Lord, God is help us.
My God is the only God. Even I am facing many difficulty in my company.
How?
Pray to the Lord and ask for his help, for my Lord is a real living God.