Lamentations 1:16 also describes weeping without ceasing, but adds that no comforter is found — amplifying the despair of 3:49.

Lamentations 2:18 commands tears to stream day and night without respite — identical language to the ceaseless weeping in 3:49.

Jeremiah 14:17 uses identical language — eyes streaming tears night and day without ceasing for the wounded daughter of Zion.

Jeremiah 9:1 wishes for a fountain of tears to weep day and night for the slain — the same unending lament as 3:49.