RobH_en_tn/pro/24/24.md

Whoever says to the wicked person, ... will be cursed by peoples and hated by nations

The word "nations" is a metonym for the people who live in the nations. These words can be translated in active form. Alternate translation: "People will curse whoever says to the wicked person, ... , and the people of other nations will hate him"

the wicked person ... a righteous person

Possible meanings are 1) people should never call any wicked person a righteous person or 2) no one should say of a person guilty of a crime that he is innocent. Alternate translation: "a person guilty of a crime ... innocent"