Leviticus 20:25

Modern King James Version

And you shall make a difference between clean animals and unclean, and between unclean fowls and clean. And you shall not defile your souls by beast, or by fowl, or by any kind of living thing that creeps on the ground, which I have separated from you as unclean.

Cross References

Genesis 1:21

And God created great sea-animals, and every living soul that creeps with which the waters swarmed after their kind; and every winged fowl after its kind. And God saw that it was good.

Leviticus 10:10

Even for a distinction between the holy and unholy, and between the unclean and clean

Acts 10:28

And he said to them, You know that it is an unlawful thing for a man, a Jew to keep company with or to come near to one of another nation. But God has shown me not to call any man common or unclean.