Leviticus 10:10

10:10 And that ye may put difference between holy and unholy, and between unclean and clean;

Deuteronomy 14:3-21

14:3 Thou shalt not eat any abominable thing. 14:4 These [are] the beasts which ye shall eat: the ox, the sheep, and the goat, 14:5 The hart, and the roebuck, and the fallow deer, and the wild goat, and the pygarg, and the wild ox, and the chamois. 14:6 And every beast that parteth the hoof, and cleaveth the cleft into two claws, [and] cheweth the cud among the beasts, that ye shall eat. 14:7 Nevertheless these ye shall not eat of them that chew the cud, or of them that divide the cloven hoof; [as] the camel, and the hare, and the coney: for they chew the cud, but divide not the hoof; [therefore] they [are] unclean unto you. 14:8 And the swine, because it divideth the hoof, yet cheweth not the cud, it [is] unclean unto you: ye shall not eat of their flesh, nor touch their dead carcase. 14:9 These ye shall eat of all that [are] in the waters: all that have fins and scales shall ye eat: 14:10 And whatsoever hath not fins and scales ye may not eat; it [is] unclean unto you. 14:11 [Of] all clean birds ye shall eat. 14:12 But these [are they] of which ye shall not eat: the eagle, and the ossifrage, and the ospray, 14:13 And the glede, and the kite, and the vulture after his kind, 14:14 And every raven after his kind, 14:15 And the owl, and the night hawk, and the cuckow, and the hawk after his kind, 14:16 The little owl, and the great owl, and the swan, 14:17 And the pelican, and the gier eagle, and the cormorant, 14:18 And the stork, and the heron after her kind, and the lapwing, and the bat. 14:19 And every creeping thing that flieth [is] unclean unto you: they shall not be eaten. 14:20 [But of] all clean fowls ye may eat. 14:21 Ye shall not eat [of] any thing that dieth of itself: thou shalt give it unto the stranger that [is] in thy gates, that he may eat it; or thou mayest sell it unto an alien: for thou [art] an holy people unto the LORD thy God. Thou shalt not seethe a kid in his mother’s milk.

Acts 10:14

10:14 But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.