What does Jeremiah 14:17 mean?

Tell them this: ‘Let my eyes overflow with tears day and night, without stopping, because my people have been shattered by a terrible blow. They’ve been hurt so badly, no one can heal them. Their children and even the people in the streets have been destroyed by the enemy.’ Jeremiah 14:17 - Modern Text Bible

(Jeremiah is told to mourn deeply for the people, because their suffering is overwhelming and there’s no relief in sight.)