Here "the world" is a metonym for the people in the world. Alternate translation: "Go everywhere there are people" (See: [[rc://en/ta/man/jit/figs-metonymy]])
This is an exaggeration and a metonym for people everywhere. Alternate translation: "absolutely everybody" (See: [[rc://en/ta/man/jit/figs-metonymy]] and [[rc://en/ta/man/jit/figs-hyperbole]])