# that they have followed and served, that they have walked after and sought, and that they have worshiped

The word "they" here refers to the people of Judah.

# walked after

This refers to serving or worshiping. See Jeremiah 2:23.

# The bones will not be gathered or buried again

"No one will gather their bones or bury them again"

# They will be like dung on the surface of the earth

"all over the ground". This emphasizes that they will be disgusting and because they will not be buried.