These are the beasts which they shall eat
That is, which they might lawfully eat of, which were allowed for their food; for they were not obliged to eat of them if they did not choose it:
the ox, the sheep, and the goat;
which were creatures used in sacrifice, and the only ones, yet nevertheless they might be used for food if chosen.
The Brenton translation of the Septuagint is in the public domain.