en_tn/num/18/28.md

must make a presented offering

AT: "must present an offering" (See: rc://en/ta/man/translate/figs-activepassive)

give his presented offering to Aaron

Here the word "his" refers to Yahweh.

Out of all the gifts you receive, you must make

AT: "From every offering that you receive from the people, you must take 10 percent to offer to Yahweh as your own offering to Yahweh"

that have been given to you

AT: "that the people of Israel have given to you" (See: rc://en/ta/man/translate/figs-activepassive)