Daniel 1:8

1 Corinthians 10:18-21 NIV
Consider the people of Israel: Do not those who eat the sacrifices participate in the altar? Do I mean then that food sacrificed to an idol is anything, or that an idol is anything? No, but the sacrifices of pagans are offered to demons, not to God, and I do not want you to be participants with demons. You cannot drink the cup of the Lord and the cup of demons too; you cannot have a part in both the Lord’s table and the table of demons.

1 Corinthians 7:37 NIV
But the man who has settled the matter in his own mind, who is under no compulsion but has control over his own will, and who has made up his mind not to marry the virgin—this man also does the right thing.

Ezekiel 4:13-14 NIV
The Lord said, “In this way the people of Israel will eat defiled food among the nations where I will drive them.” Then I said, “Not so, Sovereign Lord! I have never defiled myself. From my youth until now I have never eaten anything found dead or torn by wild animals. No impure meat has ever entered my mouth. ”

Leviticus 11:45-47 NIV
I am the Lord, who brought you up out of Egypt to be your God; therefore be holy, because I am holy. “‘These are the regulations concerning animals, birds, every living thing that moves about in the water and every creature that moves along the ground. You must distinguish between the unclean and the clean, between living creatures that may be eaten and those that may not be eaten. ’”

Psalm 141:4 NIV
Do not let my heart be drawn to what is evil so that I take part in wicked deeds along with those who are evildoers; do not let me eat their delicacies.