# I am appointing you ... to uproot and break down, to destroy and overthrow, to build and plant

Jeremiah would do these things to various nations by saying that they would happen. He would uproot, break down, destroy and overthrow some nations, and he would build and plant other nations.

# to uproot

God speaks of Jeremiah destroying the nations by what he says as if the nations were plants and he were to pull them up out of the ground.

# to destroy and overthrow

Jeremiah uses these words to show that this will certainly happen.

# to build and plant

God speaks of Jeremiah causing nations to become strong as if they were a building and he would build them, and as if they were plants and he would plant them.