The Israelites are on the eastern side of the Jordan River. Moses uses a question to remind the people where these mountains are located. This question can be translated as a statement. Alternate translation: "As you know, they are beyond the Jordan ... Moreh." (See: [[rc://en/ta/man/jit/figs-rquestion]])
"near Gilgal" This may not be the same place as the city near Jericho. Moses may be referring to a place that is near Shechem. (See: [[rc://en/ta/man/jit/translate-names]])