Jeremiah 16:4
16:4 They will die of deadly diseases. No one will mourn for them. They will not be buried. Their dead bodies will lie like manure spread on the ground. They will be killed in war or die of starvation. Their corpses will be food for the birds and wild animals.
Jeremiah 16:6
16:6 Rich and poor alike will die in this land. They will not be buried or mourned. People will not cut their bodies or shave off their hair to show their grief for them. 1
1 sn These were apparently pagan customs associated with mourning (Isa 15:2; Jer 47:5) which were forbidden in Israel (Lev 19:8; 21:5) but apparently practiced anyway (Jer 41:5).