Cross reference
Deuteronomy 14:19
19 Every winged thing which goes flat on the earth is unclean to you and may not be used as food.
Leviticus 11:20-23
20 Every winged four-footed thing which goes on the earth is disgusting to you;
21 But of the winged four-footed things, those which have long legs for jumping on the earth you may have for food;
22 Such as all the different sorts of locust.
23 But all other winged four-footed things which go on the earth are disgusting to you.
Philippians 3:19
19 Whose end is destruction, whose god is the stomach, and whose glory is in their shame, whose minds are fixed on the things of the earth.