General Information:

In verses 19 to 42, the writer thinks about the lessons that he and his fellow citizens should learn about God and his anger and mercy.

wormwood and bitterness

Wormwood is a plant that gives a liquid which is very bitter to drink. Together "wormwood" and "bitterness" represent severe suffering. (See: rc://en/ta/man/translate/figs-doublet and rc://en/ta/man/translate/figs-metaphor)