Jeremiah 15

Then the Lord said to me: "Even if Moses and Samuel were to stand before me, my heart would not go out to this people. Send them away from my presence! Let them go! And if they ask you, 'Where shall we go?' tell them, 'This is what the Lord says: Those destined for death, to death' those for the sword, to the sword; those for starvation, to starvation; those for captivity, to captivity.'

In the previous passage, God tells Jeremiah not to even pray for the people of Judah, but he does anyway. and this is God's response to his prayer. to anger God so much as to Him not even wanting to answer your prayer is so scary. the rest of this passage God says how He's going to punish those people.