Yet, Yahweh, you know
all their counsel against me to kill me.
Do not forgive their iniquity
nor blot out their sin from your sight,
but let them be overthrown before you;
Deal with them in the time of your anger.
“Deal with them in the time of your anger.” Jeremiah is asking Yahweh to not put off dealing with the evildoers, but deal with them now, while He is still angry about it.