Variantly: "They shall not appear before Me empty-handed": but with burnt-offerings. But perhaps, with peace-offerings. It follows (that it is with burnt-offerings), viz.: "Rejoicing" is written (here) in respect to men, and "rejoicing" is written in respect to peace-offerings. Just as "rejoicing" vis-à-vis men is with something that is fit for men (i.e., peace-offerings, of which a man eats) so, "rejoicing" vis-à-vis Heaven is with something that is (uniquely) "fit" for Heaven (i.e., burnt-offerings). It would not be fitting that your table be full ad the "table" of your Master, empty.