This has a quotation within a quotation. A direct quotation can be stated as an indirect quotation. AT: "then you decide that you want a king just like the peoples of the nations that surround you have kings, then" (See: [[rc://en/ta/man/translate/figs-quotesinquotes]] and [[rc://en/ta/man/translate/figs-quotations]])
# I will set a king over myself ... round about me
Moses has the people speaking as if they were one person. It may be more natural to translate this with plural pronouns. AT: "We will set over ourselves ... round about us" (See: [[rc://en/ta/man/translate/figs-pronouns]])
# set a king over myself
Giving someone the authority to rule as king in Israel is spoken of as if the people were setting the person in a place above them. (See: [[rc://en/ta/man/translate/figs-metaphor]])
# all the nations that are round about me
"all the surrounding nations"
# all the nations
Here "nations" represent the people who live in the nations. (See: [[rc://en/ta/man/translate/figs-metonymy]])
Both of these phrases mean the same thing. They both refer to a person who is not an Israelite. Yahweh is emphasizing that the people of Israel should not let a foreigner rule over them. AT: "a foreigner over yourself" or "a non-Israelite over yourself" (See: [[rc://en/ta/man/translate/figs-doublet]])