"You must distinguish between the unclean and the clean, between living creatures that may be eaten and those that may not be eaten."
NIV
To make a difference (a distinction) between the unclean and the clean, and between the animal that may be eaten and the animal that may not be eaten.
AMP
To make a difference between the unclean and the clean, and between the beast that may be eaten and the beast that may not be eaten.
KJV
