Who is being addressed by the statement: "and speak well to people"?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

1. The Jews. [Ibn ʿAbbās, Ibn Jubayr, Ibn Jurayj] The meaning is: "Speak truthfully and clarify the description of the Prophet (ﷺ)."

1. The nation of Muḥammad (ﷺ). Abū al-ʿĀliyah said: "Say to people what is good." Muḥammad ibn ʿAlī ibn al-Ḥusayn said: "Speak to them in the manner you would like to be spoken to."