Leviticus 11:43

11:43 Do not make yourselves detestable by any of the swarming things. You must not defile yourselves by them and become unclean by them,

Leviticus 20:25

20:25 Therefore you must distinguish between the clean animal and the unclean, and between the unclean bird and the clean, and you must not make yourselves detestable by means of an animal or bird or anything that creeps on the ground – creatures I have distinguished for you as unclean.

Isaiah 65:4

65:4 They sit among the tombs

and keep watch all night long.

They eat pork,

and broth from unclean sacrificial meat is in their pans.

Ezekiel 4:14

4:14 And I said, “Ah, sovereign Lord, I have never been ceremonially defiled before. I have never eaten a carcass or an animal torn by wild beasts; from my youth up, unclean meat has never entered my mouth.”

Acts 10:12-14

10:12 In it were all kinds of four-footed animals and reptiles of the earth and wild birds. 10:13 Then a voice said to him, “Get up, Peter; slaughter and eat!” 10:14 But Peter said, “Certainly not, Lord, for I have never eaten anything defiled and ritually unclean!”

Romans 14:14

14:14 I know and am convinced in the Lord Jesus that there is nothing unclean in itself; still, it is unclean to the one who considers it unclean.

Romans 14:1

Exhortation to Mutual Forbearance

14:1 Now receive the one who is weak in the faith, and do not have disputes over differing opinions.

Colossians 1:28

1:28 We proclaim him by instructing and teaching all people with all wisdom so that we may present every person mature in Christ.

Titus 1:15

1:15 All is pure to those who are pure. But to those who are corrupt and unbelieving, nothing is pure, but both their minds and consciences are corrupted.