God is my all in all

Jeremiah 14:1-22
Then the Lord said to me, “Do not pray for the well-being of this people. Although they fast, I will not listen to their cry; though they offer burnt offerings and grain offerings, I will not accept them. Instead, I will destroy them with the sword, famine and plague.” 
“The prophets are prophesying lies in my name. I have not sent them or appointed them or spoken to them. They are prophesying to you false visions, divinations, idolatries and the delusions of their own minds. And the people they are prophesying to will be thrown out into the streets of Jerusalem because of the famine and sword. There will be no one to bury them, their wives, their sons and their daughters. I will pour out on them the calamity they deserve.
We acknowledge our wickedness, Lord, and the guilt of our ancestors; we have indeed sinned against you. For the sake of your name do not despise us; do not dishonor your glorious throne. Remember your covenant with us and do not break it. Do any of the worthless idols of the nations bring rain? Do the skies themselves send down showers? No, it is you, Lord our God. Therefore our hope is in you, for you are the one who does all this.
There is severe and prolonged drought. The people once again appeal to God. But God will not listen. Neither will he hear Jeremiah's pleas that they has been duped by the lies of false prophets.
Yet Jeremiah goes on praying for them until God's terrible answer in 15:1.
Why?
Jeremiah who knew the terror will come on Judah so he pray for them to the Lord, but God did not accept for their sins are great and there were no way to repent. The time of God is come, God has given Isreal and Judah long time to repent and return from their evil. But they didn't.
The proplets should deliver the truth to people, but they prophesying lies in  God's name, so God is very angry about what they did. There is nothing God does not know.
Even thought, God is my hope, my Lord, God is my all in all.
How?
You are my strength when I am weak, you are the treasure that I seek, your are my all in all. Seeking you as a precious jewel, Lord, to give up I'd be a fool, you are my all in all.